The suggestions from @zeroability are good things to try to narrow down the cause. If none produce positive results:
I would would strongly recommend not to include so many different issues in one thread. Forum etiquette is one issue per thread, and yes there are multiple reasons for this. One reason for this is that if a problem gets solved in a “catch all” thread with multiple issues other users that encounter the same problem won’t be able to find the solution.
Another recommendation is to not try solve this many issues at once, perhaps pick the two most important and start separate threads for each issue. Also for people to work on issues we need either some way to reproduce the issue or logs. In your case probably we will need logs in order to try to find a cause for the problem.
How to get logs and hardware info for issue reports
Some things in that How To are a bit out of date but it remains a decent beginner guide to gathering logs.