Nice stats, 13/8 is pretty good at 2NL (where everyone limps), you are off to a good start!!

Don't get too hung up on the red line, it will typically go down at 2NL since it is filled with calling stations and weak players who call too much and don't fold. This means we don't win much by making others fold and more so by value at showdown.

Suggestion for improvement:
Never open limp, EVER!!
Become more positionally aware, tighten up UTG, UTG+1 and open more from the CO and Button. Your ATS (currently 12%) will go up (ideally 30%+).

Hope this helps, good luck at the tables!!