Help your teammates
I see this a lot and i want to just say it to the general bjj population.
If you roll with someone and smoke them please take a second to teach them something. Anything, positioning, framing etc.
I cant tell you how many times i see a purple belt smoke a white/blue belt, judo toss them, wrist locks etc and when the timer goes off they just walk away. Its a dick move that person is a teammate they aren’t here so you can stroke your ego. Beat them up and then give them the respect to help them.
I get it, you arent the coach but giving feedback is something anyone can do. Even whitebelts. If you roll with someone and you notice they never get an underhook when its available mention it. It’ll make your gym better and in turn it’ll make you better.
/rant
Edit: i understand it can come across as patronizing. You obviously need to have a little bit of tact and read the situation. However, look at the responses from the lower belts in this thread, they want the feedback. People dont know what they dont know.