: Under the "Wii Remotes" section, find your desired slot (e.g., Wii Remote 1) and choose Emulated Wii Remote from the dropdown menu.

Most users use Xbox, PlayStation, or Switch controllers. Here are the common mapping conventions: Wii Classic Button Recommendation for Xbox/PS Controller

Since the physical Classic Controller originally plugged into the bottom of a Wii Remote, you must replicate this "daisy-chain" setup in Dolphin.

: In the main Dolphin window, click the Controllers button or go to Options → Controller Settings .

: Click the Configure button next to that slot.

Once you have the perfect layout, you should save it as a profile so you don't have to re-map it for every game. How to Setup a Classic Controller on Dolphin Android

: A new Extension tab will appear at the top. Click it to map your physical controller’s buttons (A, B, X, Y, sticks, and triggers) to the virtual Classic Controller. 2. Best Mapping Practices for Modern Gamepads