[TOMT] movie about kids making a band for a competition

Sorry for my English but I'll try to make it understandable

Around 2018 to 2020 I watched a movie and ik what is it about but idk if I'm right. The movie is about a kid trying to find other kids so he can perform on a competition. The kids friend help him find other members and I'm pretty sure the members were different races too. One is black, one is Asian and other ones pretty sure European. And in the ending. The kid probably got bullied or harassed by his band opponents. So the kid and his members were performing I the competition and later won. More info is that there's a scene of the kid and his friends meeting up with a Asian girl or a boy learning Karate or martial arts. The kid and his friends find it fun so they copy every move the Asian does. And they also practice dancing.

Now here's more info

Release date: somewhere between 2016 to 2019

Q: where did you see it?

A: I'm pretty sure I used to watch it on a canceled channel called Fox family movies. Or bein family movies.

Please help me find this movie