username change

If a username is already taken by someone else, does that mean I can't use that username?

I want to get a Instagram handle that is taken because it is just my name without anything else. Is there anyway to obtain that?

Looking for someone who will help me acquire an Instagram username. Pretty much just asking you to message about 10-20 account owners on my behalf to see if they'd be interested in selling their username/account. Most of these accounts are inactive or only have a small number of followers--I...