JJ and AA hands are funny free money, but the last hand is interesting.
Flop overbet usually means fish in my experience, or small chance of an exploiting winning player, who nearly always bluffs there. Agree with your read. Well played!
(but I don't play nlhe cash anymore - just 6+ - so take it with a grain of salt...)
It might be better, if you stick with one pre-flop sizing for open-raises.
4x and 4.5x are both bigger than usual, but if you prefer to raise more than 3x, you can surely stick with 4x for all your opens, which likely puts some regs slightly out of their comfort zone. But nevertheless, you should work on your 3-bet calling ranges, and your 4-bet ranges vs aggro regs, since only 4-betting AK and QQ+ is likely too tight, once you played more than a few hundred hands against the same regs. Against good agressive regs, it will help you to throw in a 4-bet bluff with hands like A5s (or KTs?) or so, every now and then. Suited hands with equity if you see a flop, but weak enough to fold vs 5bet shove.
Others readers who actually still play nlhe cash could surely give you more precise tips, regarding that.
IIRC, the red line is not as important as you might think. Most of your winnings will come from having the better hand at showdon, as long as you play at wild 50$ tables.
OFC you can improve it, but it doesn't have to be positive to have a great winrate at these stakes, I think (hope some NLHE grinders correct me, if I'm wrong).
I think you should post which stats you use on your HUD, to get help from other nlhe players ITT. For post-flop, c-bet, fold to c-bet, and how often someone raises OTF are important stats, I think.
Anyway, I'm not an expert, and there are few people left who give honest advice on here, but you surely have enough experience to know what counts for you.
The only thing that often differs a good online grinder from a good live grinder, imo, is being aware of blockers (to bluff) and backdoor draws. Those extra ~5% to hit backdoor flush (or ?% for runner runner str8), or blocker to nutflush or so, are often the tiny bit extra equity/chance to bluff that you need to continue playing your hand profitably, instead of folding, in spots with wide ranges, like btn vs bb.
I beg your pardon, if you knew all that before. Didn't want to insult your intelligence
Hope you grind a lot, as long as games are still so soft due to corona.
In Europe, games mostly went back to normal already (Sunday Million went from 3 Million back to 1 Million).