Open mic night with no instruments just backing tracks

I really want to do open mic night, but I don’t play any instruments very well and I was told by a friend that I could just bring a backing track so I wanted to get more opinions on it. I wouldn’t be playing any instruments over the backing track just vocals. Would this be a good idea? Advice?

Edit because I don’t want to deal with mean comments. Only helpful advice please.

Edit again because I am NOT DOING KARAOKE: I would be singing originals and a few covers that I have altered to sound better with my style as an artist. Im just learning to play instruments and they wouldn’t sound good if I were to try to play them on stage.