set + FD against straight

[LysSta]

i keep building stakes like x3 and then i lose it all to 3-4 bad beats... i think i m never gonna be a winning poker player i flop sets i put it all in the guy gets his set on the river in holdem i have AA against J9 of hearts he makes a straight flush on the flop ... AA vs KK all in pre-flop i lose he makes a straight... and these are all 10-15$ pots i try so hard to play well then i get suck out and all the effort i put in it is wasted and it always happens when i start winning... i win like 80 small pots and lose all the profit in 1 sucky hand u think i should quit?