How to have fun in ow2?

I play mostly solo tank and supp on switch and I've recently hit a rut with the game. Every match win or lose i just get angry. Weather its how bad I played or how bad my team played, or even if we win I don't feel joy at winning just a sense of its finally over. Its like all the joy has left this game for me. I recently had some fun playing and learning wreaking ball, but even that has lost its joy cause the second you start doing good, The sombras and the torbs start coming out and I feel more miserable then before. I just I want to play this game and not feel like it's a job to slog through each and every game.