PLO 5/10, Live cash game, 8 handed, buy in 500, rake 2%. Hero (500) posts the straddle 20,
3 fold, CO (300) raises to 40, Villain (500) on the BTN calls, he is a regular, tight professional; SB and BB fold, Hero Js7h5s5h completes to 40; 3 see the flop (135) which is 7d4h3c. All check.
The turn is Jd, Hero bets 100, CO folds, Villain calls. The pot is 335
The river is Qh, Hero checks, Villain bets 200, Hero? Any comment on how Hero played his hand so far? Maybe hero blocking top set and straights should bet the flop?

First, gotta point out the way you wrote out the hand history deserves major props. Very clean man.

As for the hand my thoughts:

Preflop: Yep
Flop: I would strongly consider leading here ourselves. This flop is very good for our range compared to co and bu. We have very strong blockers and want to utilize them immediately to build not only pressure now but on future streets as well. Flop is often going to check around, which isn't what we want given. We get to deny heaps of equity as well.

Turn: unsure tbh at this spr. If I'm betting I'm prob just potting and going for max equity denial. I like that you did bet big if you chose to bet. Again not entirely sure on check or bet as can see merrits for both.

River: 1ish spr we need about sub 30% vs his range. I'm calling. We unblock diamonds which missed and QJ will be a very limited part of villain's range. Also sort of a weird sizing from villain. Would think he'd want to bet full pot here with his value range. Villain should have a reasonable bluff freq here as well given how capped our range is now by the river. Once we check river we now remove 56,JJ and probably 44 and 33 as well from our range, capping the top at J7. Addional fold eq if he thinks you overfold the river as well.

Interesting. Which one is easier to read, Js7h5s5h or J755? I'm probably old and dumb but if I struggle to understand the hand and the board I just don't bother, even if all the information is presented.

If someone be kind enough to explain to me how to use these suits symbols, i will be more than happy to oblige

They are under smileys. Or you can write for example : spade : without the spaces.

TY Amok :Just to check it works AAAA

Preflop: Fold.

Flop: Lead out 2/3 pot with top pair, 55 straight blockers and a board that hits you more than CO / BTN.

Turn: Fine.

River: I think you can lead 1/3 pot here as a sort of thin value / blocking bet. It's unlikely he has 56 with this action so I'm not sure why why we would consider anything other than calling. Yes, he has QJ here a lot, but that's poker. You are basically at the top of your range with the action of this hand.

No for sure, the format you provided is easier to read. I was mainly comparing to the thousands of unbelievably poorly written HH's lol. Agree with you though the one you provided is far better.

River plays better as a large bet that can fold 2p and sets some times than xc imo.

Probably ok to fold now. Villain shouldn't really be betting light here, and it's not like you have a huge number of natural semi-bluff on the turn. You should have much more xc than xf.

River sizing from villain also looks like a value bet. Probably a spot where it's safe for Hero to overfold vs. most opponents.

Like others have said - flop is a good candidate to lead.

I called and lost to villain’s hand q864
Villain and I often discuss hands (honestly, if such thing exists in poker). When later I asked, he said he would have called a full bet on the turn, and he would have checked if the river was a diamond.