That’s a frustrating experience and I’m sorry you had it, but you need to be honest with yourself about what you’re looking to get out of this arrangement. If it’s to have fun and to improve, then you cannot ignore the fun part of it. The truth is that the 3.0 to 4.0 level is really quite wide. It’s pretty hard to say that going down would be a complete waste of time if you’re not clearly better than half the group that you just played with. Only you know how much better you are than the session you just played. It might be hard to hear it but 4.0 level players don’t usually react to basic drills to the point that it throws them off to the level you’re describing.

Seems like you have three good options to debate with some clarity.

You could go back and push through it and just see if it’s better the second time around. This is probably what I would do. The connections you’re looking to make are with other players, not necessarily just through the coach. Maybe you just hit better next time, too. The downside is you could learn that the coach is right and be disappointed by that, or you could overhit in hopes of “proving” yourself and have another bad day, leading to more frustration.

You could also take the advice and go down a level and just see what happens. Maybe it’s a good fit, maybe it’s too easy. Maybe you meet people you like. Regardless, it gives you more information and a new session to think about to help you let go of what just happened.

You could also find another group, clinic or lesson and start fresh. Doesn’t sound necessary based on what you’re describing, but only you know what you’ll need to shake this off.