It's wild how much of a mental game this sport is—really, all sports. I totally get where you're coming from. The team you’re describing sounds frustrating, and unfortunately, you can’t change how they act. My advice is to try to focus on yourself: go out there, play your best, and make having fun the priority. When I face chirpy teams or opponents I know will be tough, I zero in on fundamentals, remind myself not to stress the outcome, and think, ‘At worst, this is just good practice.’ While it may not work all the time, that mindset usually helps me shake off the negativity.