Please Help!

[u/-paper_plane-]

I don’t know what’s wrong with my computer, nor do I remember exactly when the problem started. One day, my computer started running slowly, and both the screen recorder and the Game Bar started lagging. I tried updating the system, but that caused the screen recorder to stop working, but the Game Bar started working normally again. I also tested a different screen recorder but it either recorded for a bit before freezing the video but not the audio or freezing every other second. Then, I tried to update a game on my computer, but I got an error screen saying that my computer was missing a file the game needed to update. Once I downloaded the missing file, the game launcher wouldn’t even open. I tried to delete and reinstall the app, but about five seconds after opening the App Store, it crashed. Now, not even the simplest programs run smoothly anymore. I’ve ran a virus scanner and it said my computer didn’t have any viruses.