Hi Gonira, i`m not a stats expert, but from the first glance you are playing way too tight from late positions and from the sb.

Your river agg% is on the lower side (turn is ok`ish), which means you`re probably not double/triple barreling enough or bluffing when you have no sd value.

Other stats seem ok, so you should probably focus mostly on widening your cut off, button and small blind ranges, especially SB since 14% steal is really low.

do you limp the sb some %? If not then you're definitely too tight folded to you in the sb. Think other opening ranges are fine (CO is a bit loose if anything imo). Sprince I think you misread the open %'s.

You fold a bit too much to flop cbets and then call turn/fold river too much. Turn fold to cbet of 35 and river 55 is not good, I think a good adjustment vs you would be to never bet turn give up river. This also explains your redline cratering, calling too many turns and folding too many rivers is a good way to lose a lot without showdown.

Your river call efficiency is just way too high, which further goes to show you fold too many rivers. What's your river call win%? I'm guessing close to 50%? You're always getting significant pot odds on the river, it's ok to call and lose!

You could also barrel more turns and generally just be more aggressive on the river, 22% river aggression is crazy. 

Lastly I think it's likely you ran pretty hot in your first sample or are playing in extremely soft games.

I've played against you and it seems that you're a decent player but nothing special. It's likely that the games just overtook you, and when you're playing zoom that's tougher than reg tables anyway.

the graph and stats i posted are filtered to regular tables only.

i ran hot in my first sample for sure (winning at 9bb/100 wr with -3bb/100 non-sd is way above my long term average), but as i said, i had a stretch of over 700k hands in my old database winning at 5bb/100 with a -5bb/100 red line, 700k is not sunrun. and seeing this redline suddenly drop to a loss rate of more than -10bb/100 in almost 200k hands (almost certainly not variance) is a shocker for me.

first thing in my mind is i might be cbetting flop and 3betting pf too little much and folding more to cbets, compared to how i played before (my wwsf went from 47.4 to 44.6, this can't be good). i just can't point anymore what was the kind of close spots i was attacking before i stopped winning :/

it's possible that the games overtook me (seeing the high level of discussion in this low stakes forum is quite depressing, makes me think games are dead), but it's mind boggling to me how i can be crushing for years until early 2014 and then suddenly it all stopped. games haven't changed this much overnight (i guess?)

fwiw, my river call win% is 46.5. i agree with you, steve. i probably should try hero calling more often. and very good point about my turn and river frequencies, it makes a lot of sense. but what is strange is that i had this same lack of balance before, yet i was winning at a way more substantial rate, which makes me believe the turning point in my game was really due to pre-flop and flop aggression, i don't know.

sprince, i think you misread my opening stats. my mp/co/btn/sb open is currently 19/31/50/32

SB open is too low for 50NL, so many people overfold in the BB (about half of all regs have >50% BB fold vs SB steal). Apart from that, and that you overfold vs flop and river cbets, it all looks pretty decent. If it's not just variance it's probably a matter of range construction problems.

Run a 3bb/100 winrate through a variance calculator (find your stdevbb/100 from your tracking software; if it doesn't offer that stat then just use 100bb/100) and you'll see that a 100k BE stretch for what's actually a pretty solid winner in 2014 isn't unusual.

I would hire a good coach and review some gameplay. Sometimes u just got to step it up

it's what i would do if i had money left, haha

about the sb opening, do you guys really think it's good to be looser than in cutoff and play a lot of junk out of position? it seems to me that regs defend a quite wide range bvb and do float a lot nowadays. i actually filtered the opens from sb in my database with hands outside the top 30% and i'm slightly down opening them (not a huge sample though). and i'm very selective in picking the spots where i open loose, so i imagine it would be worse if i open a lot against tougher villains.

Looks like my lifetime graph. Maybe you are just running bad and before you were running good.

First of all, the games are not dead ;). It's not as easy as it was before, but there is still money to be made. Regarding the fact that I`m very far from your level I will not even try to give you any stats related advice but I think I can give you my 2 cents on the matter. 

You`ve been playing the same limits for a while, you`ve been playing a lot versus some of the same regulars, and regulars adapt! So that is where your problem could be (regs exploiting your play). Although the majority of money you make in poker is from recreational players, you can't be a solid winner while you are being exploited by regs. 

BE vs regs and making money from the fish is not a good strategy. I would suggest focusing more on the regs in your games, always be vigilant at the tables, always take notes, figure out ways to exploit the hell out the regs and make sure you are not being exploited in any way. Put in some extra study hours, that is always a +ev decision. :)

I only gave a quick look to your stats, but seems you have to increase your btn winrate!
Probably by barrelling more when you open and get called (18% riv aggression is low).

Considere bet, bet, overbet 2xpot river btn v bb, when your opponent range is capped.
At 50nl they should fold a lot!