You could make a case to be more aggressive pre-flop since its so difficult to play your hand out of position against 5 people. Especially if you have a narrow range/tight image. On this particular board it may have helped. That being said, I think a $2 call is reasonable/standard. Also, sometimes in 1/2 games your opponents just aren’t smart enough to fold.
You might even put in a min raise on the flop to see where you’re at and potentially slow his action on the turn. When he calls and bets the turn, you’d sense you were behind.
It’s hard to make a case for your call on the river against a pre-flop aggressor. He could easily have a king since he’s continued on the flop and turn. Plus your kicker is 6.
Of course, I’ve been at the end of a losing day like this and called knowing I was behind just telling myself I had to see it.
Cheers! Run better!