I went to a second opinion and they still haven’t fixed my loose bridge (Photo)

I have photo from a bridge replacement they would not fix it and said I needed another grand for cleaning instead. I went to another so called dentist and they said the same. I think I should go to a doctor not a dentist. There is something wrong and these dentist are being evasive and not addressing my concerns. Do I get a dr opinion or what? They replaced it in late February and it’s still loose with openings. What can I do?