Hello, its possible by orthodontic treatment or by ceramic veneers . But we would need to check clinically to advice correctly

It would be impractical to give a logical suggestion without having a look at the clinical situation of the teeth as well as X-rays. Treatment options are definitely available without braces treatment but the most appropriate modalities applicable for your case can be revised only after a proper clinical examination. You can discuss the same with your dentist in detail before choosing any one of them. Alternatively you can post your dentition's clinical photographs and X-rays and get the opinion online as well. Regards.