How could I do that?
Oh cmon. Read the other ton of stuff I wrote here.
I guess they are DI games and your XI controller can't pass both. Use XInput+
I tried Xinput plus already, I don't know what I'm doing wrong. The game is Bugs Bunny: Lost in Time. And I can barely read what you write, it's a big mess.
You need to set up the triggers to work as buttons rather than axes (I don't know which wrappers have this). Another option is to use a controller program (e.g. Xpadder) for the buttons that don't work and the native support for everything else.
XInput+ can already map triggers as buttons. And even remap them to other axis (as it would be preferable), with none of the normal limitations you would expect from something with "XInput" in the name