Hi,
As is common for beginners when they try to describe hands, you've apparently mis-remembered the action sequence. The image you uploaded...
... shows that villain was in the BB, so he didn't open pre-flop.
I suspect that there was another player that limped and you isolated in the cutoff, and the BB flatted with A2s.
You c-bet, he check-called. Turn checked through, villain led the river for pot, repping trips+, and you jammed on him.
While your king flush blocker is somewhat useful when making a bluff-shove like this (the ace of clubs would be better), your post-flop "story" doesn't make a whole lot of sense. You'd probably only go bet-check-bet with a few combos of club-club hands. Many of your actual flushes would triple barrel.
More importantly, bet-size tells in the micros are generally very useful. If someone bombs the river, they usually have a strong hand, and they aren't going to fold to a raise.
You can beat these stakes by avoiding any fancy plays, and by betting your strong hands and checking and folding your weak ones. You do not "have to bluff always" if there's no other way to win the hand. With KQo, I'd just fold the river to the pot-sized bet. Jam with 77, 22, and nut flushes.
P.S. I find that BOOM is quite useful for "saving" interesting hands, if you don't have a tracker/database. I often click the BOOM button (the little red star in the chatbox or the replayer) after a pot that I want to look at again later. And you can post a Boom link in the forum so that other people can replay the hand.