We tend to believe that "we are" in a certain way since we are born and that this is impossible to change. However, we have the ability to generate certain changes in our personality and thus transform ourselves into better people or have more bearable relationships. It's just a matter of committing to yourself.
Do you think long before you speak and do your colleagues think you are insecure? If you decline an invitation to a party, do your friends think you are "weird"?
Perhaps the reason is that your personality leans toward introversion, which is something other than shyness. Although there are people who often confuse both and think that they are synonymous.
But it's not like that.
Therefore, "introversion is not a disease that needs to be cured, nor is it something that needs to be repaired and there would be no reason to repair it either."
On the contrary, many experts believe that introversion is something a person is "born" with, so extraversion is not the only "right" way to be.

Between the shores of pain and pleasure flows the river of life. Only when the mind refuses to flow with life does it stagnate on the shores and become a problem. Flow means acceptance, letting come what comes and letting go what goes "
-Sri Nisargadatta Maharj-