fold JJ with trash hand on the river?

I cant see what have u done otr. I suppose you need to count the equity, I wouldnt fold if he bets 1/2 psb, unless you saw donkbet-shove and still he's very short. Not a lot of draws there, call seems reasonable, unless like I mentioned he shoved.

OTR is in the spoiler.

Although you've got decent odds, I dont see him donkbetting otr without at least two pairs. Still, its NL2, spews are rather common. Very close, fold I'd say.

Thanks! I learned something new

Here is a useful mnemonic: Do I have many better bluff catchers? While the answer to this question doesn't tell you much about the actual strength of a bluff catcher, it will tell you to call with a reasonable frequency so that opponents can't run you over. For example, in this hand AA is probably a call, while JJ is probably a fold. AA is not immensely stronger than JJ here, but calling with AA and folding with JJ gives you a reasonable rate of calling. In addition, there will be the occasional KK/QQ (yes, admittedly rare) in your opponents hands.

X/c f, x/c t, donk river when draw complete on nl2 is a fold.

Since I don´t see many hands he can bluff with this way and as Yohan mentioned we have some better bluff catchers fold is probably OK

Not all QQ+ are calls here.