To support many gamepads in browser games that do not have Gamepad API support or have incomplete support (there are quite a lot of such games), you have to install various third-party mapping software (for example, JoyToKey/antimicroX), which redefines gamepad commands for the browser window - this is routine and time-consuming. This applies to different operating systems, since standard gamepads do not have drivers and are designed to be configured within the games themselves, basic mapping in the OS is incomplete and gamepads are not always integrated with browsers at the user settings level.
A browser-level solution is needed to configure standard gamepads, as well as take into account the features of different types of gamepads - that is, save different settings profiles for different gamepads.
Thank you!