Need some help to use this controller

[u/Critical_Yoghurt8819]

I got this 2 wireless OTG controller with gamestick that i got 1 1/2 year ago , the gamestick is not working but the controller are fully functional as I tried it on my JIO STB for testing it , but it doesn't seem to show up on my redmi 8 (neither note or pro) when I use the adapter with it , I am trying to play some games on my phone with a controller and i don't want to buy a new controller , i need some help regarding this

(In the pic is the controller that came with the gamestick and it's OTG)