Flying FPV is NOTHING like flying a camera drone flying in ACRO means your drone will not automatically level nor will it hover. You have to do all that yourself. It takes plenty of practice to do it and many hours on the simulator before you are ready to Fly the real thing. Its a different world. BUT
And This is important.
IF you don't do it You are missing out on the best and most addictive activity this hobby has to offer. The FPV hobby has taken me from complete frustration to I cant wait to get out there and FLY!!! I have not tried the sim you have BUT any sim using a game controller is gonna give you problems from the start SO get a real controller of some kind. Give it time. approach it slowly just get the drone off the ground and simply try to hover it at first. We all started somewhere. Now
How do you fly FPV?!: I cant tell you. That it is something that just "comes" to you by feel. Each day you practice it will just seem to get easier until one day you are racing the gates.
One more tip go to Youtube and watch some videos from the likes of Bardwell