6/12 hi/lo

I would like to know how people feel about how bad i played this hand. I limp utg with A2dd3cJh, there is a raise and a 3 callers in fromt of me so i also just call. there are 4 people to the flop. it comes out 6h 8d Jc, i check flop intial raiser bets gets raised other folds i just call also. so now there is 3 to turn. comes a 9d. i now have nut low and nut flush draws. i check initial better bets other calls i raise and both just call. river comes a Jd. i check initial raiser checks and the other guy bets i just call and the initial raiser raises, the other guy just calls and i fold for for ONE more bet. i folded 12 dollars into a pot around or a little over 200. the guy who raised had a K high flush. now im not sure but when the board paired on river i was thinking i was saving a bet to a full house. i know the raise with K high flush was dumb but it worked. He seemed like a tool who didnt understand the game but do you all think Im the toolshed who doesnt???