Post Cash Game Blue

So I’m fuming. I decided to play cash 1/2 today and bought in for a 100€ at a table where the other players had 300€ plus. I grinded my stack up to 180€ playing tight and aggressive.

I get dealt AA, I can smell the money already. I raise to 18€, it folds around the button and he shoves his stack 300€ plus, so I called and he shows 77 and hits a set on the flop and then full house on the turn. I’m just disgusted and can’t believe it. I wanted to build a bank roll and got wiped out when playing so good and in my flow. I’m taking a break for a while just cant believe I lost in that spot, I had 81% equity.