Filter out blinds play and his graph looks awesome. So what?
Do you guys not see how big of a leak his red line really is?
The red line losses completely nullify his showdown winnings and he is breaking even over 50 THOUSAND hands! This means that OP does not have an edge at these stakes and it's as simple as that.

People are here are telling him to c-bet more, 3 bet more, read this post, read that post blah blah. None of that shit is going to help enough. In fact, just randomly increasing frequencies is probably going to make the problem worse.

OP my advice to you is to just work on your game as a whole and focus on playing better poker! You are clearly playing too many tables and not paying enough attention. Other players ARE profiting from all this money you are folding away.

Once you start playing better, the red line will come naturally.