Instead of saying that, it would be better to say that I was not welcome to go to that place at all. So that's where they gather, so why should I join in the fun? I don't owe him a meal.

It’s better to stay in your own nest. Just do whatever you have to do. It has nothing to do with any of these things. Try to end the process as early as possible. Once you get the certificate, you are free to do whatever you want.