Your problem is you are playing massively under-rolled. Even the best players will go through down swings/ times when they are running bad, the difference is they have bankrolls with enough buy-ins to handle it. If you only have $75 it wont take much of a downswing to lose it all.
I'd suggest depositing a reasonable amount (£300) and grind it out at 10NL, or if you want to play lower at 4NL deposit $120ish, give yourself around 30 buy-ins as a minimum.
Obv this advice hasnt touched on your game, obv if you are making -EV moves and plays then you are going to lose your roll eventually every time.
So my advice:
Practice good bankroll management
Play solid Poker
and just for good measure, if you go on a rampage of monkey tilt turn off your computer
