FOMO = Fear of missing out.
Did you ever thought “Oh, I wish I could speak like them, or be funny like them”.
Some people in your circle might be better than you at something in the social part.
It could be speaking, making other people happy, etc.
Does it matter? Everyone is different, there is no standard, there is no minimum requirement to be friends, and even if there was, you were already accepted.
Who you are is already more than enough, and what you bring to the table might be entirely different that what other people bring.
Sure, you can wish and desire to be more funny, or even practice it, but don’t forget that you probably already do something else, invisible to your eyes, that other people are also wishing for.
And they probably thing “Oh, I wish I could do that like them”