Avast software is terrible

. After installing it, scanning doesn’t work.

First, I’m an Avast user and not an Avast Team member.

You have posted in the Avast Cleanup > AVG Beta sub-forum. What program have you installed ?
Can you be a little more detailed, what scanning are you talking about ?

Did you have a previous antivirus and have you disabled it or uninstalled it ?

Yeah, I had the same issue. Uninstalled it and switched to something else works way better now.