3bb/100 = $3, using your
hands per hour number 3 x 3.6 = $10.8 per hour. I believe that's far from a massive winrate.
Playing 6 tables of 6max (which isn't difficult at all once you gain fundamentals) gets you about 500 hands per hour, make a decent winrate of 5bb/100 and you're makng $25 an hour, which is obvs very decent.
What you need to do is start at a lower level, learn to play properly online and move up through the levels. You cannot beat 100nl online so you should play at a level you can beat. 1/2 live is probs equivalent to about 2nl, no joke.
The convenience of
online poker will always beat live, live crushes your soul.