clutch problem 93

When I first got car noticed i had to push clutch pedal to floor to get to engauge. Driving down road took out of gear to shift could not get back in gear. When I opened hood fluid was a little low added fluid still didn't
help. When i push the pedal in clutch doesnt disingauge. :banghead: if i replace the clutch will it fix problem is there anything else tha may cause this