1999 cavalier clutch issues

I have a 1999 chevy cavalier, im having clutch issues. I just replaced clutch, pressure plate, and slave cylinder/throw out bearing TWICE. first time it was leaking from slave cylinder. I do not see any visible leaks, but there are a few drops of fluid on bell housing of trans, I think its slave cylinder, but I don’t want to take it out again and it not fix the problem. any ideas? I have tried bleeding the brakes over and over and over. if you pump the clutch a few times before you start. it will work once, but then it will not. please help