[2021] [Gameplay]i need help with my mouse

i have a problem with my mouse, when i am playing the senetivity goes up and multiplies in course of the thunt/match. it s noch changing in the settings or dpi of the mouse. than i changend it to an other razer mouse to look if it works. it didnt. i bought a corsair wich doesnt work too . my old trust mouse is working but i cant play with it. the support of razer is to ******et to help me and the ubisoft support too. does anyone had this problem too? i couldnt play the last season and i want to paly this one. i think everyone can emigen how horrible it is to dont play an whole seanson.
thanks for your help