What to use for mobile VR remote

I have a VR headset, and the games are actually some what fun. Problem is, my headset doesn't have an NFC switch, and I have to constantly slide my phone out just to click something. Also, I have both a PS4 and Xbox One controller, but none of them are compatible with any of the dozen apps I've tried. The PS4 controller worked once for literally only moving forward, but that's it. I'm rooted, tried all the pairing methods with dancing pixel studios, etc. Nothing works.

I don't understand why these super common controllers are locked out like this
Any alternatives? I don't want to have to order some random bluetooth button remote thing JUST for phone VR.