So I tried to find the value of the different control modes you can use (cheat engine) in the game and I succeeded
It does not work perfectly online, but it is a start i guess. ( probalby because some of the controles are overridden by server? )
Values :
for mous=aim mode : 16777473
for simplified mode : 16777472
for frb mode : 16777416
If you find a way in making this work better In game, let me know