Because you have a cheap Chinese copy of Xenon headlights, that are not designed to work in a reflector type lense.
The reason you get flashed is because you have absolutely no beam pattern and might as well be driving with your main beams on, as that's how it will appear to other motorists. Take them off and bin them or buy some aftermarket projector type headlights instead.....
Or do it properly and buy genuine Xenon headlights and retrofit them to your car.