Hand 1 is meh, it really comes down to what type of villain this is. We don't know much, but we do know villain has played all 4 hands previously, which means they must have posted instead of waiting for the blinds as this would be the 5th hand (unless the table has just filled up - did villain post?). They've raised 3 of the 4 they played. That's not how I'd expect a passive player to behave the moment they sit at the table.

I think their line looks passive, like a floated flop, a turned flush draw with a cheap bet and then fire bigger when they hit the river, but that doesn't necessarily fit with the aggro/eagerness to play of the above. So you could also argue their line is an attempt to steal the pot. I feel like villain's range is polarised to flushes, 44 and trash. I don't think they ever have a better two pair, 77 is discounted, etc.

I guess the closest I can come to a summary is this is a spot where I feel like I should fold but I can't make a strong enough argument for it. We kinda have a bluff catcher except there may be a bigger bluffing range than we think. It's not a snap fold vs an immediately aggro unknown. I'd probably timebank, check PTR and see how much villain is down.

Hand 2 I like, there's thin value and you prevent villain from betting and confusing you. It's better than c/c and c/f. I also think your sizing is fine, river doesn't need to be any bigger and I wouldn't bet less on the turn - there are two flush draws and if you bet less you might make the hand harder to play depending on villain.

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How many tables do you play? Because while you only have 4 hands on these villains, in hand 1 in particular you have the opportunity to check the instant history and see what his pf raise sizing was like, or if he showed anything down, or what his post flop bet sizing was. You could mention if villain posted or waited for the blinds. Anything to narrow it down.