i was going to change my front brake pads and rotors today, but ended up stripping the brake rotor retainer screw so now i cant get the rotor out, i didnt know the screw was that soft, any suggestion on what i can do to get screw out ?

i tried using a screw extractor but it ended up broke in half and part of it is still lodge inside the screw

i havent attempt the other side yet in fear or stripping that side too, so whats the best method to get these screws out without stripping it ?