Bet turn

Agree with RoleTide here:
You polarized OTF and the most obv draw got there.
So ppl usually wont cbet too thin for value or bluff randomly while they are checking back a lot of hands 2p/sets/Ax with diamond that will for sure call a bet.

If you think you can raise opponent cbet on this flop with this hand then you need to realize which turns you will bet at a high frequency with a polarized range of top of your hands and garbage. This is the exact turn you want to continue with your flushes and garbage so you bet here. I dont think I even slow down here with a set so anything above that I'm betting. Yes there is some GTO nuance i am missing with a few inaccurate bets and missed checks but this is 10nl and you need to get max value to get out of this hell hole stake.

If you always bet flushes here Villain should stab a lot vs turn check which would make checking turn with a flush higher ev than betting so you need some flushes to be checking turn. But there's nothing wrong with betting. I would bet small to include sets in my range.

We should sometimes check/call with some of our flushes but check/raising with mid flush is a bit too ambitious as you isolate yourself against very strong range. This hand should mostly bet as you want value especially from his hands with high diamond. You also dont need to make it very big on turn - many of your potential draws(flushes, 43s) hit so it may be hard for him to justify bluffcatching against big sizing with hand that can be dead already.