Don't give up. I looked at two of your most recent games where you played the Sicilian. You won one and lost one and were doing well in both.
Why not just take the offered piece? He had nothing to follow it up with. Then you could enjoy your nice lazy piece up endgame.
So I've never played e4....at least not since I was a little kid. Against e4, I've gone through a ton of ideas as black, but I've never been satisfied totally. I started with the French, but it felt cramped - I like more space. After that I switched to Alekhine's defense which is great fun as a blitz sideline but not really a practical weapon in the day-to-day. A few months of running my horse in circles and I moved over to the Sicilian - opening theory posterchild of millennial era chess. I've learned my lines, I play them reasonably, and I push b5 like a champ, but these ultra-sharp madcap beatdowns - where great at times - are not really what I'm looking for in every game.
I'm thinking that I sometimes want to equalize and draw with black against e4 - find a nice quiet position where I can develop my pieces and wander around until my opponent gets bored, trades everything looking for an attack that leads nowhere, and lets me win a king and pawn ending. Perhaps we can suggest sensible, drawish positions to play against e4 when I don't feel like insane, prison-shanking Sicilians?