Some people have very thick skin. They can be insulted or treated
disrespectfully, yet they carry on as though it doesn't matter. That may be
because they have a strong level of confidence and the judgment of others
doesn't affect them. But you aren't someone who can ignore it when someone
treats you in a demeaning way because you are so sensitive. Hopefully, you
don't feel you are deserving of such treatment. Hopefully, you don't feel
the need to gain someone's approval who treats you less than respectfully.
Your mission now is to work on your confidence and not on focusing on what
others think of you.