Hey guys i was wondering if any of you could help me, i have two problems
1: Under braking there is a loud sort of clicking sound could anyone tell me what the problem might be.

2: Being that sometimes when i brake my foot goes all the way to the floor and no braking happens, i have bled the brakes and im not loosing any brake fluid either, sometimes the brakes work and other times its like i have to pump the brakes to work any ideas

Thanks in advance guys!