Whats right and whats wrong here?

Talked to some people about this hand and its pretty mixed.
What do you guys think?

***** Hand History for Game 18182001375 *****
$0.02/$0.05 USD fastforward NL Texas Hold'em - Thursday, January 17, 18:07:35 GMT 2019
Table fastforward NLH 5 (Real Money)
Seat 1 is the button
Total number of players : 6/6
Seat 2: DairoHolmesK ( $12.10 USD )
Seat 4: K_Krisztian9 ( $5.12 USD )
Seat 3: Player123456Mi ( $5 USD )
Seat 5: RomiMa777 ( $6.65 USD )
Seat 1: RunIt0nce ( $5.20 USD )
Seat 6: bulow66 ( $4.51 USD )
DairoHolmesK posts small blind [$0.02 USD].
Player123456Mi posts big blind [$0.05 USD].
** Dealing down cards **
Dealt to RunIt0nce [ As Jc ]
K_Krisztian9 folds
RomiMa777 raises [$0.13 USD]
bulow66 folds
RunIt0nce raises [$0.46 USD]
DairoHolmesK folds
Player123456Mi folds
RomiMa777 calls [$0.33 USD]
** Dealing Flop ** [ 7h, 4s, 6d ]
RomiMa777 checks
RunIt0nce bets [$0.62 USD]
RomiMa777 calls [$0.62 USD]
** Dealing Turn ** [ 5c ]
RomiMa777 checks
RunIt0nce checks
** Dealing River ** [ 8s ]
RomiMa777 bets [$2.48 USD]
RunIt0nce calls [$2.48 USD]
RomiMa777 shows [ 9h, 8h ]a straight, Five to Nine.
RunIt0nce doesn't show [ As, Jc ]a straight, Four to Eight.
RomiMa777 wins $6.84 USD from the main pot with a straight, Five to Nine.

I try to avoid calling river bombs when the best I can do is chop the pot.
I don't know if it's correct to do so, but I often don't even bother c-betting AJo on that flop.

I do have a tendency to C-bet a bit to often, thanks for the advice.

I think you're over cbetting this board if you're betting AJo

If you're cbetting with air here, probably better with hands like KQo that don't block his Ax which may fold

If he wanted to get you off a chop, he could have just gone all in.

Who has more 9s in their range? I think once you figure that out you will have your answer.

[QUOTE=DooDooPoker;54716825]Who has more 9s in their range? I think once you figure that out you will have your answer.[/QUOTE

I do suppose he has 6+ 9x combos but hes playing from UTG, so I only put him on 99s or A9(maybe off suit),K9ss, Q9ss. Is that too tight of a range?

I am new to 6max fastforward.

[QUOTE=PokerPJE;54718738] 89s, T9s, J9s, A9s. If he doesn't like folding to 3b he can also have Q9s/K9s

You basically only have A9s that might have bluff 3b his open

I don't really like the 3bet pre nor the sizing, but I'll let it slide.

As played, wtf do we call river for? At best we're chopping and most of the times we lose.
Snap fold river.