I'm sure getting an education struggling with troubleshooting Linux Mint. Have finally come to grips with two important dynamics.
1. The System Reports feature. If something truly goes wrong, it will post it. Problem is in my case the system freezes. When that happens, I can't even click on the System Reports to see the error. All I can do is reboot the system. Which effectively erases whatever results the System Reports showed.
2. The log file. Be very careful about fretting over it. Easy in my own case with OCD. Just looking at it compels me to want to do whatever it takes to make them go away. But here's the rub: Doing so may potentially cause new problems. And perhaps most importantly log criticisms do not necessarily cite real problems that must be addressed. More often than not, they are just "programming criticisms" created by pissy developers.
Example: [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000100] Failed to grab modeset ownership
(For as ominous as it appears, some Nvidia sources claim it is innocuous. To ignore it.)
I've spent a great deal of time on this log error, only to surmise that attempting to solve it is not likely connected to why my OS randomly freezes. In the meantime, I've altered the command line of my GRUB file (etc/default/grub) to see if it may stop these freezes:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_rev_override=1 nvidia-drm.modeset=1 loglevel=0"
In the meantime, I've run various tests and used deductive logic to conclude I have no hardware problems that I can find. Only that somewhere in the course of using Mint 21.3 I began to experience random freezes of the entire OS. Which continue with Mint 22.0.
So now it's just a stupid waiting game. One that could last hours or days. Been at this for months now. Making it rather difficult at the moment to seriously recommend Linux to those not up to having to deal with such things. Then again maybe you live a charmed life and will have no such problems with whatever hardware platform you have. Up to now I've resisted updating my bios, but that may be the last card I have to play. We shall see.
Running another Ubuntu-based OS (Pop!OS22.04) on this very platform, to date I've had no such problems. Beats me what's going on with Linux Mint and Nvidia!
So, would I go back to Windows? -Hellno!