Honda innova 125 brake problem

Have you checked the brake system for air? I guess air compression is to blame here Brake fluid transfers the power from the handle to the brake pads with just a little fluid compression as power loss. Air compression will take all your power just to compress and the pads will not recieve any power. I guess through the crash the brake line caught some air and now you get the said effect of air comprtessing.

Try replacing the fluid andde-air the system afterwards.

Riding your bike without a properly operating FRONT BRAKE is EXTREMELY DANGEROUS. Than being said the reason your front brake is not working is probably due to air bubbles caught up in the line after your crash. Your brakes need bleeding and a proper inspection before you can ride your motorcycle again. If this is already done and your breaks don't work you should have your calipers checked for any seal damages. Did you happen to hit while crashing any part your braking system including calipers, levers rotor disks etc??? If that is the case have your brakes properly and thoroughly inspected.