What are you "pressing"? Function keys, some pre-programmed key combinations?
Are you clicking icons?
What other apps have an identical problem?
Have you done any updates or reinstalls. Could be that some functions have reverted to default settings.
Here is a link that should help:
https
/chromebook.guide/chromebook-setup-guide/
Just work your way through it and see what you can find. And there are other similar links to be found.
E.g., check keyboard shortcuts - determine if they are as you would expect.