How to react...
You've raised initially in late position and the button calls, everyone else folds.
You flop middle pair, the board looks good and you make a continuation bet of about 40-50% of the pot. Button insta calls.
Turn comes, low card. You have second best pair, with a decent kicker. You make a similar if not slightly larger continuation bet. Button insta calls.
River comes an over card, theres no flush or straight out there. Do you continue betting?
Of course this is all situational and dependant on your exact hand, but hands like this keep coming up. Whether it be with middle pair, low flushes, low end of straights. You make bets out of position and get insta called on the flop and turn.
What do you do on the river, checking looks like you've given up, and with a marginal hand a call could be difficult to make. And a bet could just be insta called when you're behind.
Perhaps theres something simple i'm missing here, I am fairly new to the game.