I made a controller mapper with a special Among Us configuration which let you play with a controller! This is for the PC version (I haven't tried Bluestack) and I tried it on Windows and on Mac (via Wine) using a Xbox S controller.
I mapped the right stick to mouse movement so you can still do tasks and sabotages; for venting you can press one of the arrows on the DPad to vent in that direction without having to click.
When you start playing, you need to pick a deck for the tutorial, and the game recommends the monster starter deck. It says something along the lines ...