I quarreled with my best friend for a month because of trivial matters, but I didn't contact her or send a message to call me. Actually, I care that she called her yesterday.

Since we are best friends, the relationship must be extraordinary. I haven't contacted you. Maybe I forgot to call you back because of too many things yesterday. Of course, he may still be angry with you, but anyway, if you cherish this friendship, you might as well call him again today. You can call her when he is not busy, or you can send him a long message telling him what you think. If he cares about this friendship as much as you do, and sees your heartfelt words, he will certainly cherish his feelings with you more.

Since we are best friends, we can say whatever we have. This is called a best friend. Instead of guessing here, send her a message. If he is indifferent to your dignity again and again, it can only show that in this friendship, treating her as a best friend is just your wishful thinking, and people don't take you seriously at all. In that case, there is no need to compromise.