Has anybody used a handheld gaming PC with DJay?

I’m going to be picking up a Lenovo Legion Go, which runs Windows for some long plane rides. On takeoff I always like to spin a few tracks on DJay using my phone. Wondering if anyone has done this and has any insight on how to set up controls for the buttons/analog sticks, ect. Apologies if this is the wrong section of the forum!
If not, I’ll dive into the rabbit hole and report back!

I have Roger Ally - I’m going to use it but I haven’t even tried to install the program on it yet. If I do something, I will share my experience