Please Help! Unusable Finder after Updating from Catalina to Big Sur and Monterey. 4 very Painful Weeks

The other approach, which is by no means a guaranteed win, is to start removing the stuff that is making your Mac so slow.

More than one antivirus app - This computer has multiple antivirus apps installed.

 Antivirus software: Apple, CleanMyMac, and Malwarebytes

although we like MalwareBytes ability to identify potential malware on ONE scan, no one here EVER recommends you run it non-stop. scan once, then un-install.

CleanMyMac is, and always has been scare-ware. Cleaning by discarding caches NEVER makes your Mac faster, only slower. remove BOTH versions you have installed.

"unsigned Files" section

each and every item listed under "unsigned Files" section of the report is likely very old version, or has no place on a modern Mac. Up-to-date Serious Commercial Software Developers pay about US$1000 to obtain a Developer software-signing Certificate from Apple and use it to sign their software when issued. That way you know it is legitimate, and not just some hacked-up junk. If signed software misbehaves in the field, Apple can (and has) revoked Developer certificates.

you have remnants of incomplete removal of VirtualBox and MacKeeper

You are showing OneDrive AND DropBox running at all times, and your diagnostics messages section lists bird (interface to iCloud). Except for bird, which is MacOS native, those third-party sync services scan your files non-stop, looking for changed items. This punishes performance enormously.

once you get your iCloud items synced, we would expect bird to reduce its resource use. The others will keep hammering away incessantly. The appropriate way if you MUST use non-Mac file sync services is to launch when needed (NOT at startup, NOT at login) and quit them when they are finished copying the files of the moment.

you have some sort of scare-ware called MemoryClean. your Mac RAM and disk space do not benefit from such apps. Removing caches makes you Mac SLOWER, and interfering with the disk drive leads to spectacular disk problems and crashes. This is JUNK.

There is your answer.

Set up a new account with a name you can live with going forward, and start using it today. DO NOT import anything more than your user files into this new Account.

You have lots of RAM and a good amount of Disk space. Your Mac is just overwhelmed with all the junk you added.

If you have run Etrecheck, POST its report, which is already laundered of any personally indentifiable information and is safe to post.

Use the included instructions.

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