These days, I get a badminton lesson from a trainer who did his activities (performed) kind of well as a professional athlete in this field. I decided to join that community club in order for me to be energetic by getting a (some) fresh air from this sports (sport). There are a plenty of people who are absorbed in this sports (sport) and sweat a lot by playing exciting games. I know they (the players), especially those who have been there for a long time, are really proud that they are good at playing badminton in a stable/good position or in a certain form. I admit that they deserve it because they invested a lot of time and effort,(comma needed here) but sometimes their bragging and showing-up makes me get competitive. Of course they don't have any vicious intention to pull my leg on purpose, (comma needed) but I often feel left out(no hyphen needed). They never allow me to count me in just because I'm a new person and I am poor in the way I get positioned (my form). Anyway, since I'm a person who never knows a word (the phrase) "give up"(no hyphen needed), I will overcome any sort of difficulties and finally achieve my goal. 

**Pull my leg usually refers to someone joking with you.  Not sure if this is what you mean.