I can't play anything that requires precision aiming with a controller.
A Steam Controller though? I'm way better. Especially with the gyro aiming or micro adjustments on the touchpads.
I know they are discontinued but as someone like you who had a rough time with those types of games without a mouse, I'd see if you can find a steam controller on ebay or something.
But I don't play FPSes at all any more really. And with games like cyberpunk, I'm always more stealth than action oriented so it hasn't been a problem. And when I ox have to use a normal controller and am forced to aim, I heavily rely on aim assist settings. I don't care ๐