This guide will tell you how to fix Controller Applet Errors in yuzu and Ryujinx.
For Yuzu
1- First, you have to make sure that your controller is connected to your PC so that the emulator will automatically detect the controller.
2- Now, click on emulation on the top, tap on Configure and select the controls tab.
3- Click on the button you are ready to emulate as it will be highlighted in green and then hit the button you have to set up in place of that button on your controller. Once you are done, click on OK.
4- Repeat the whole process for player1, player2, and for player 3.

For Ryujinx
1- First, set up your controls for these click-on options, then click on settings and tap on Input.
2- Make sure that the dark mode is enabled as it will improve your visuals.
3- First, click on configure player 1 and select your controller from the input devices drop-down menu.
4- To map out your buttons, click on the button you want to map and then press the key on your controller/d-pad.
5- After that, go to your profile, click on Add and select the name for your controller profile. After that, press OK.
