My thoughts on Mario Tennis fever online.

Idk why but everytime I play Mario tennis fever I use certain characters and when I do I lose and lose and lose and lose until i get disappointed and frustrated. I honestly don’t feel like playing the game anymore and since I got OCD it’s making me anxious and stressed and I can’t beat anyone and I’ve lost all the good skill I once had and now I feel like giving up. If anyone can talk to me on this I would love to know what you would do in this situation.