you are limping/calling too much from late position. Probably suited junk.
You are stealing too infrequently from cutoff.
stop open limping, if you never open limp you aren't losing much value
stop calling/completing from the small blind - yeah, 1/2 a bb to call - but ffs it's T2o. And don't be calling raises from the blinds much, playing out of position sucks.

you may also be 3-betting too much, kinda hard to tell though.


Take this with a grain of salt, i've just had to move down in stakes myself....
Why not try playing 1k hands where you only call raises with pocket pairs, you never open limp, you only 3-bet QQ+/AK, if you limp behind then you only call a small raise sometimes, and only with position on the raiser and at least 100bb effective. Oh, and fold Qxs and Jxs every time it's not connected - and even then most of the time.