<human>: Can you provide a brief rundown of the text in within 3 sentences?

Hey there /r/relationships. I'm a 14 year old sophomore in high school and it's about the 3rd week of school (and about the 5th week of xc practice).

I'm not exactly the fastest on the team, but I am still determined to get better. At least, I was, until a week ago I was diagnosed with shin splints (which hurt like a bitch if you've never had them), and I haven't been able to run. I've been doing cardio on a bike but it's not the same. Anyway, I missed both of our meets so far this season and now the entire team believes I am faking injuries. I shrugged it off, but it got worse. It has gotten to the point where the team has divided itself over if they should defend me or if they should blame me. Most are blaming me, including some of my closest friends, believing that I am just in XC to screw around.

Which brings me to my last point, yesterday I was not going to run with the team (shin splints yo) so I was going to go to the trainer but my friend asked me to walk him home. He lives 15~ minutes away from the school, so I thought no biggie. Anyway, of course, the school bus full of runners going to our meeting place at a park drives by and suddenly my phone blows up with texts about how I'm being a pussy and that I don't have heart anymore. Today I decided I'm done with the team, because they aren't a family anymore.

My parents, however, believe that if I don't do a sport I am a failure. I signed up to play intramural basketball in the winter (which I fully intend to play) and then outdoor track in the spring. I want to tell them that I would like to quit because going to practice feels like a chore and a prime spot for me to get bullied/picked on/whatever and not a fun place where I can run and make friends. Any advice?
<bot>: Want to quit XC because the team has gone to shit. How do I tell my adamant parents I want to quit?