After being rejected a few times, you will get used to it.

When others reject you, there is always a reason for rejecting you. You want to make more friends, but others may not want to make more friends. It is nothing to worry about.

In addition, let me say one more thing, some of these postgraduate entrance examination groups are really useful, and some are just for making money. You should wipe your eyes clean and analyze them carefully.

Also, time spent on review and socializing will not have much effect on improving your grades.

Good luck