can't delete a game I downloaded via steam, even though I moved it to the trash bin and cleared it.

I tried to delete counter strike, I downloaded it from steam. I threw it to the trash. and still see it in grey in the storage (75gb). can't delete it from there.

I delete the steam app as well, but when I restart the Mac - the steam app opens automatically.

I can't find either one of them anywhere on the computer - not the app, nor finder.

1. I just see the counter strike app in the storage (can't delete it - shows in grey).
2. and steam opens automatically when I turn on the Mac.