Random shutdowns

[zeroability]

This is probably the same issue as this:

Shutdown on boot when battery level is critically low

You have not mentioned if your battery is fully charged or not. More information is needed. Charging should be possible without the system booted, or there are other issues with the system that have nothing to do with OM. Are you able to confirm that? Unfortunately, that doesn’t mean anything. Ubuntu uses an older kernel and installs everything you could possibly need for every system ever made. Similar with AlmaLinux, I’m sure. Windows is a completely different system with the same drive…

Please don’t duplicate posts with slightly different information.