Masahiro

I am a button; SB is 100, BB is 200.
6 players playing.

[Preflop]
Ah8d
HJ 3bet 800, CO calls, I call, SB and BB fold.

[flop ]
Qc Ad 4d
Pot 2700.
HJ raises to 1900, CO calls. I call too.

[Turn]
7c
Pot 8400.
HJ calls, Co calls. I raise to 4700.
HJ calls, CO calls too.

[River]
2d
Pot 22500.
HJ calls Co raises to 22500.

Is it appropriate to fold on the river on this board?
And was it appropriate to raise to 4700 on the turn?
I raised to put pressure on the flush draw.

I am a button. 100 for SB and 200 for BB.

Preflop.
I 3bet with Kh8s, SB calls.

Flop
5s 7d Qd
Pot 1400.

Opponent checks, Q is in our range, I raise to 800. Opponent calls.

Turn.
5h
Pot 3000.

Opponent calls. I call.

RIVER
8d
Pot 3000

Opponent calls. I call.

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Is this right strategy?
I'd like to know what advanced people would do.