can't open google chrome

after my computer crashed overnight ...

Whatever the problem is, that seems to be its first clue. Your Mac shouldn't have crashed. For some reason downloaded apps are no longer being properly identified as launchable.

You already received and acted upon solid advice, but before you reinstall macOS you might simply try updating it. macOS 10.15.3 is the current release.

Reinstalling macOS is certainly simple enough, but keeping it updated is even simpler, and you ought to be doing that anyway:

Keep your Mac up to date - Apple Support

This macOS 10.15.3 "Combo" update might be the way to go; unfortunately there's no guarantee it won't suffer from the same inability to launch: Download macOS Catalina 10.15.3 Combo Update. Perhaps try downloading it in "Safe Mode" and installing it while in that mode: Use safe mode to isolate issues with your Mac.

Top Processes Snapshot by Memory:

...

launcher 98 MB (Mojang AB)

I don't know what that is. It may be another clue. (Edit: it's used for Minecraft. Probably unrelated)

hi this is Skatitall, i couldn't login to my main account cause i can't use the phone number set to verity it's me. i ended up resetting my computer and reinstalling macOS like you said and decided to only keep a few things so it's pretty much like out of the box now. google chrome opens up fine now but i've had to restart my mac a few times to get it to work ok and it even crashed once... i'll send the crash report here. maybe the problem has something to do with the new hardware i put in a while ago? i upgraded the storage to 1TB (Crucial MX500 1TB 3D NAND SATA 2.5 Inch Internal SSD - CT1000MX500SSD1(Z)) and the memory to 2x8GB (Timetec Hynix IC 16GB Kit(2x8GB) DDR3L 1600MHz PC3L-12800 Non ECC Unbuffered 1.35V CL11 2Rx8 Dual Rank SODIMM Laptop Memory Ram (16GB Kit(2x8GB)))

Never, ever use "cleaner" apps. Remove it. You don't need one to do something as simple as throwing Chrome in the trash.

Regardless of that, an app you just installed shouldn't have a blank icon. Something in general is wrong with your system.

I see you have EtreCheck. Make sure it has Full Disk Access in the System Preferences under the Security & Privacy panel. Then run EtreCheck and post the report here. Make sure to paste the output into the Additional text box.

From the appearance of the icon, I'd say it's damaged. Do you have the latest version?

Beyond that, Chrome is not your friend. It's not only a resource hog, it collects anonymized data of your computer and Internet usage the entire time your computer is running and sends that info to Google's servers, whether Chrome itself is open or not. There's a reason it's free, and it's not for your benefit.

You're welcome.

As a little extra info, if you have the same problem after installing the latest version, go to the Applications folder and remove the mangled Chrome app, then try installing it again. The installer may be incorrectly trying to fix what's there instead of replacing it.

You have very little running in the way of third party software, and none of what I see is a concern. Wacom drivers, MalwareBytes, Valve for online games, and BlueStacks to emulate the Android OS (for playing Android games on your Mac, I presume). I wouldn't think the last one would be causing such problems, but you never know.

Since there isn't much of a hint in the report why the OS would be confused about an app, and not even show its icon correctly, I'd first create a full, restorable backup, then reinstall the OS. May not help, but it would eliminate a damaged OS as a possibility.

No, not really. The OS simply isn't behaving as expected. It's a bit of a lengthy process, but at this point, I'd still go with a backup, followed by a reinstall of the OS.

Well, there is one quick test you could try, though I don't think it will change anything. Create a new user account. Doesn't matter if you make it and admin account or standard. Login to the new account.

If you don't see these problems in the new account, then there's an issue with our main user account. If it's the same, then it's a system wide issue.

Excellent suggestion by John I frequently forget.

The Combo updater contains all of the updates released since 10.15.0 in one installer package. It's not an entire install of the OS, but a large percentage of it.

Normally, this indicates an issue with your normal user account. What that is can be difficult to track down.

My first typical test is to create a new, empty folder on the desktop. Open your user account's Preferences folder and move everything from there into the empty folder so that the Preferences folder is now empty. Immediately restart the Mac.

When it comes back to the desktop, it will look like you just took the Mac out of the box. Everything, as far as the desktop is concerned, will be back at the defaults. A downside of this is lots of apps store there registration data there, so third party apps may ask you to enter your serial number again. This was part of the reason for moving the Preferences folder items rather than deleting them. If an app does ask, quit the app, find its preference file in the desktop folder you made and drag it back to the Preferences folder. Overwrite any new one the app may have created.

Yes, it's tedious, but there's no point taking the time to reinstall the OS or applying the Combo updater when a new account pretty much proves the OS is not the problem.

Edit: Before any of the above, what it sounds like is damaged is the LaunchServices database. Reset it and see if that's all that needs to be done. It's easy to do. Open the Preferences folder in your user account. Put this subfolder in the trash and restart:

com.apple.LaunchServices

Okay, the crash you initially referred to created a rather nasty problem. The APFS file system itself had an unrecoverable error.

You could try booting into Recovery Mode and see if Disk Utility can repair the drive, but if it were me, I'd make a full restorable backup, erase the drive, and then reinstall the OS with your Time Machine backup merged in.

While not fun to be in the same place after erasing the drive and reinstalling the OS, it's still a result.

This time, the crash report is complaining about an error with launchd, which manages daemons for both they system and user. Between the two crash reports, some of the CPU memory register errors are the same.

Of the upgraded drive and RAM, the RAM is the far more likely culprit. Your Mini supports 1600 MHz PC3-12800 Non-ECC DDR3 SO-DIMMs, which is what you have installed. I've only heard of Timetec, but don't know what their quality level is. Most Mac users will tell you to get RAM for Macs from Crucial or Other World Computing (macsales.com).

Best guess at the moment is the RAM. Try removing and reseating the RAM. Also check while the RAM is out to see that the slots are clear of dust and dirt. Use a mild alcohol wipe to clean off the contacts of the RAM. Test again. If you still get crashes or odd desktop problems, put the original RAM back in. If the problems disappear, then you likely have faulty RAM from Timetec.

Timetec replaced the RAM for free since the one we had wasn't made for mac i guess... i've had the new RAM in for about 2 days now and it seems to be working normally again! Thank you for your and John Galt's help :)