I’d recommend the 8bitdo ultimate 2 wireless. Has two back paddles, but also has two additional bumper buttons so is actually 4 buttons in total. The back paddles of the controller is also much easier to press in than the Deck and extra bumpers easy to access, so even though the locations wouldn’t be 1 to 1 the use I find easier.

Just have to update the firmware of the controller and dongle and then start the controller in dinput mode to be able to bind the extra buttons through Steam Input.

I play this game with the Steam Controller using motion controls and without aim assist, and do fine against mouse and aim assist players.

So this is a game that when you die isn’t usually due to someone having much better reflexes and pixel perfect aiming than you. More game sense and good utilization of gadgets and specialization. Which to start off will be rough not knowing what everything does, but once you become familiar with it should become less of a problem.