Gamesir X3

The GameSir X3 is a mobile controller. You connect it via USB Type-C. This also has a built-in fan, preventing your phone from thermal throttling and dropping frames on heavy-duty games.

This controller is also extremely customizable. Here are some of the things you can customize:
•The length of the joysticks
•The tips of the joysticks (I lost one of them, as seen in the third picture)
•The type of D-Pad
•The button layout

This comes with:
•The GameSir X3 Controller
•Alternative buttons/sticks
•USB-A to USB-C cable
•Compact Hard-Shell Case

I got this as a birthday present from a friend, but I''ve recently switched to an ROG phone, which doesn''t exactly fit well. The built-in fan has done wonders, helping me reach stable fps for long periods of time. If you''re an avid mobile gamer, this controller would be my top recommendation.