Can I just plug in a ps4 Controller?

Yeah that’s what I tried to do which pushed me over the edge and I asked this forum what was going on. I had all of those settings set up right but when I clicked play the camera would spin to the right infinitely and my character would run forward endlessly unless I pushed up on the left stick. It’s like the input setting didn’t scale right for some reason, so annoying. Like instead of the idle being ZERO the idle was 1 instead. Thank you for your time and help by the way.