Laptop lag?

My laptop is lagging and I can no longer play with it. I used to be able to play csgo full graphics at 60 fps.

Minecraft doesn't even work anymore

What can I do to make it work normally again

Reset completely and reinstall the programs each time.

Deleting the temp files should help.

Then check whether the current Windows version is on it.

Have a look in the task manager, maybe you accidentally installed something that runs in the background and is using the laptop a lot.