Mac Mini m2, some apps stop working after few hours till reset

On my Mac Mini M2, apps stop working after few hours day by day till i do reset. When Firefox tabs are open can use internet but when new tab is opened it stops on new tab. All apps not from store like e.g. Brave cannot be open from this time. Some others like terminal shows error instead of command line. It appears from about 1 month, also on last macOS update. It looks like some part of memory dissapeared? I tried do clean installation and problem reappears.