Laptop doesn't wake up sometimes after sleep

I did some things/changes, especially related to the battery/thermals lately and also removed power-profiles-daemon(installed thermald and tlp instead).
Not constantly, but from time to time(3d time so far), the laptop just doesn’t wake up.
I need to do hard reset and then start it.

I’m having issues to investigate what causes it.
I tried to use journalctl, but I’m getting limited output no matter what I do(even with -n 300).

A similar question was recently raised here.

I don’t want to disable sleep either.
And I don’t want to go more into with things I barely know and make the troubleshooting worse.

Didn’t find journalctl explanation either

I already use LTS kernel etc