I'm rusty so may be posting some random hands for both lulz and input.

PokerStars, $6.71 + $0.29 - Hold'em No Limit - 15/30 - 2 players
Replay this hand on Upswing Poker

SB (Hero): 1,495 (50 bb)
BB: 1,505 (50 bb)

Pre-Flop: (45) Hero is SB with Q♠ 2♠
Hero raises to 60, BB calls 30

Flop: (120) 4♥ Q♣ 6♠ (2 players)
BB checks, Hero bets 60, BB calls 60

Turn: (240) 3♦ (2 players)
BB checks, Hero bets 145, BB calls 145

River: (530) Q♥ (2 players)
BB checks, Hero bets 390, BB raises to 1,240 (all-in)

Not really much on villain. I've seen him in lobby around so I guess fair chance he's a reg. Then again, no clue what that implies on the $7 level. Does it change if I have AQ? I'm not even sure about that.

I think in practice you can linearly call Qx here because some amount of V's Qx will jam here. This hand probably should be a fold but I usually just station my trips and get frustrated when we lose

V being lowstakes reg makes it more likely they're quite straightforward and lack for bluffs in this spot imo.

Cheers for the reply. Yeah this seems like a call-and-cry-spot at best, and I ended up folding. I played some more the last couple of days and I have to agree with your idea that AQ is different from Q2 here by quite a bit. Villains would definitely play most Qx this way too, so QT+ would probably be a call here.

Probably not the best thing to try to help on the public forums. Reason is pretty obvious. But still I do not care . I am playing 7s on stars during this covid breakdown(otherwise I am not playing anymore). I have 53,2 % ITM in hypers over 2,5k games. Anyway, you can check your opponents on sharkscope (u got 5 searches for free each day). Your opponent is losing player(pre rake: he is plus with rake). If you are going to fold this spot too often in the way you played u are going to get bluffed here a lot. I will just assume that you are not too aggresive player and he is pretty aggressive( in HU terms in mean). Please do not answer that. Anyway C bet on flop, turn, river, in this spot (like your opponents see this). But yeah, tough spot to call this.

EDIT: I would probably bluff here every time vs some players if I would assume 2 of 3 bluffs would work (plus move) and it opens my ranges how opponents see them (even if I get called).

This just seems really bad. Our triple barrel is clearly repping trips or better, so I don't see how "bluffing here every time" is good vs almost anyone and I think it's not a spot where we should get bluffed a lot at all.

Thanks Duncelanas, for reply.
I really can not agree with what you wrote.

The way I see this betting from BB point of view: C bet on flop, turn, river: This can be played the same way with any hand possible.(I do not know the hero preflop range(but it is not important that much): If hero would have AA,78,910, completely blank...this would have played the same in a lot of cases(looks like obvious C betting FTR). Basically BB just calling without getting too much info to hero. When rerasing allin - river, this is like the "ultra" hand strength sign: so with all of his preflop ranges and the hands that hero would have bet like this: not many are good for calling (sometimes even Qx is folded): that is why 2/3 strategy here.

EDIT:
Yes, I play really aggressive and I have huge buy-in swings.

EDIT2:
Precondition for this river reraise is that previously did not get "caught" bluffing vs same player.