Instagram Names

I was attempting to get a 3 lettered-numbered name in instagram, though it seems impossible to do so as all the names are taken. Is there a way to let a bot do the job for you? I'm not looking for any accounts for sale, I want one my own with out the need of buying it. However, idk how and where to go to get a boy who would do such a job. Ps I'm an absolute 0 at programming.