Great job getting the EtreCheck report posted.
I don't see many red flags, but I will comment on a few things.
• SSD: for some reason EtreCheck has identified the read/write speeds of your drive as being low. That may be, but would not necessarily cause crashing, unless the drive is having some sort of failure. You can use Disk Utility (when you're booted in recovery mode) to run First Aid on the drive and see if it finds some problem with the volume directories. Also you might consider running Drive DX diagnostics to check the health of the drive.
• Chrome browser… is a known resource hog on the Mac. If you must use it, make sure you are running the latest version. When you use it, keep open tabs to a minimum. Quit the app whenever you can. I'd recommend also that you look at alternatives such as Brave or Firefox. Safari is the only browser I use, don't need anything else usually. Sometimes Firefox, but that's rare.
• You should setup and use Time Machine to backup your Mac. Apparently it is not configured. Obv this is not a performance problem, just a layer of security for your data. And as your Mac is showing signs of trouble it would behoove you to make sure things are backed up.
• VPN software is probably not needed on the Mac. VPN software is not as secure as it is marketed to be. Unless you are required by an employer or institution to install a VPN it is best to stay away from their use.
• Uninstall cyberghost vpn software
• Uninstall aviraphantomvpn software
• Do you need NTFS? Are you connecting to NTFS volumes that require it? If not, you should uninstall the paragon NTFS software.
• Are you gaming? If not, I recommend that you uninstall the Steam software.
• Uninstall any 3rd-party software that you don't regularly use.
Beyond this, I find nothing else that jumps out and screams that it needs attention.