If you would go back and read what has already been posted you will find your answer at least 3 times. No, a lack of fluid will not make your clutch slip. I sticking cylinder might.
Pedal down = disengaged
Pedal up = engaged
Just fucking take it to a shop. It needs something fixed that you won’t be able to do if you can’t take the time to read and learn the basics of how of a clutch works.
I’m done.