Get my teeth better avoiding another surgery

A year ago I got the worst toothache and I needed help. My dentist made a mistake and few days later I was in the hospital. I have already lost 5 teeth and I am only 21 years old. I am volunteering around the world and I don't have savings. I need to get a dentist as soon as possible so I can fix my teeth before it is too and keep volunteering.

Any help is the most appreciated. Thank you so much.