The leaked memory is high but not 5GB, it is about 180MB.
File /etc/sysctl.conf exists but not expected
Do you have any idea why this file would exist?
It may be nothing, but it is unusual.
Running app: ~/Library/Caches/Cleanup At Startup/CrossOver CD Helper.app/Contents/MacOS/CrossOver CD Helper
CrossOver is an application to allow some windows applications to be run on an intel mac. This may not be doing anything, but it's odd to see it in an Apple Silicon mac.
You still have Perian!
This was extremely useful back in the day, but it has been deprecated by its developers many years ago (almost a decade)... I highly suspect that this may be causing the problem.
Go to System Preferences, control-click Perian and choose Delete (or Uninstall, or similar wording); then restart your mac.
Any changes?