My issue with fc 26 online modes i really dont know what to do anymore

I bought the game a few days ago and I’m having a serious issue in EA Sports FC 26 on PC that makes all online modes unplayable. My controller works perfectly in Windows, in the EA App, other games, in menus, and in all offline modes, but the moment I enter an online match (Division Rivals, FUT Champs, Online Friendlies), my players start moving on their own, inputs stop registering, switching happens automatically, and the controller becomes almost unresponsive. Offline gameplay is completely normal.

This problem did not exist in FC 25, and I am using the same PC, same controller, and same settings. I already reinstalled the game, cleared EA App cache, repaired and reinstalled EA Anti-Cheat, disabled all overlays, tested wired/Bluetooth, removed duplicate HID devices, reset controller settings, and checked all assistance options. Nothing helps, and the issue appears only online.