IMO most people who struggle to beat the micros have a common leak. They win small pots and lose big ones.

Rather than just mindlessly mashing buttons because its fun, spend some time thinking about how to win big pots and lose small ones. If you use a HH db (PT, HM, etc) sort through your biggest losers and think what you could have done differently. If you dont, then note down your holecards right after losing a big pot and go through your HH after your session and do the same. Also spend some time going through the hands you did win, and consider if there were different ways to play them that might have won you more money (without putting you in a spot to lose a big pot if your hand isnt that strong).