Fold to a raise on the river when your hand is good but not great. Most players are passive so your better off giving respect when you get raised, especially on the river.

Thanks :). I was also wondering what combinations of hud stats can give me a hint about how often villain bluffs rivers on wet boards?

Unless you have really decent sample size.. however, you can just observe it from your experience.. but I would not actually categorize it wet, dry.. rivers. (even if there are some exceptions...) Because it is pretty complicated from the beginning and not as important as the whole fact that it is generally underbluffed, generally speaking.
I would also recommend you to check out nick howard and his free youtube content.. his approach is mainly exploitative-oriented which may gives you the fundamental understanding of where are the population inbalances and how to exploit them.

Thanks for the pointers guys. I figured out I can use river aggression % in spots like this. Will check out the Nick Howard vids, always happy to find new content creators :).

I know a decent bit aboit how to exploit stats. I think my problem comes from not realizing many players at NL2 don't bluff often with big bets, and also the fact that it's a new site so my sample sizes are quite small, and also the mix of people who play ABC and balanced regs who bluff throws me off as I never know which I'm up against.

Thank so much for the great advice :)

People aren't exploiting you and the sooner you accept that the harder you can start exploiting them. The majority of people run general population exploits and occasionally start adjusting to individuals if they make massive obvious errors but only the strongest regs at my stakes (100nl) adjust ranges to small deviations from a GTO strategy so at 2nl there's 0% chance of it happening.

So with that in mind when you are thinking of calling someone down the question "does folding this make me exploitable?" shouldn't be part of your decision process. Instead the only thing that should concern you is pot odds, or more specifically are they over or under bluffing here? If someone underbluffs by even half a combo and you look at a solver response it just folds every single bluff catcher and if they do the opposite and over bluff slightly it calls every pair. Essentially what I'm trying to point out is that equilibriums are very fragile and the precision required by villain in order for it to be necessary that you be balanced in your response is probably something you'll only ever see if you make it to nosebleeds with linus and co.

If you want to call down better don't study how to call properly, study how to bluff properly and understand when someone isn't so you can print against the mistakes that they're making.

I am assume that you have very small sample as well so don't over evaluate your HUD it can hurt you a lot. try to learn the population tendency and play accordingly.