All going downhill

I seem to lose all my money in cash games to the most annoying things ever.

For example. I just lost a $90 pot when i was BB and called a 5x raise with 1 other called, there was betting on the flop (where i caught an Ace) and then i put another bet in on the turn, it was called. On the river i hit a K (top 2 pair with AK) and just checked it, he goes all-in for $30 more and i think for a while and call. He shows 63 of hearts for a runner runner backdoor flush (after calling all my bets down at every street, gj m8 :/)

I'v also lost 2 all-ins in the past few days after getting all the money in with a straight vs top 2 pair and then them pairing on the river, thats 8%!!!

So basically my bankroll is pretty much gone.