This guide will let you know how to REMAP any button on PS5 Controller Custom.
You have to go to your home screen and then go to your settings by clicking on it from the top right side of your screen. After that, click on Accessibilities, go to the controller and navigate to the right to the Custom Button Assignments. Open this up and enable the custom button assignment. After this, you have to go to customize button assignments.

In customize button assignments, you will find your controller buttons. Now if you want to remap any button you have to select that button and it will show you the option of remapping this to another button. After this, you have to click on the Apply button.
