Snooker basics , need some help.?

I've recently started playing snooker , the problem lies in my bridge I guess. I'm using an open bridge. Whenever I bend forward and try to put the cue on my bridge , the cue is pointing downwards instead of hitting the center of cue ball. My bridge is already quite flat , and when I try to adjust it to hit the center of cue ball , my cue falls below parallel , and my chin can't touch the cue when I flatten my bridge as well. Some help please? Struggling with this problem for quite some time already.