An orthodontic consultation will be beneficial for you.

Instead of consulting online you should go to a dentist to get a clear picture of your treatment. No medication can bring back the actual level of healthy bone. It is possible not by scaling and bone grafts and may be ortho treatment. This can be done only at a dental clinic manually by a dentist not possible at home by yourself.

Hi. Yes based on your OPG there is some bone loss seen. And also gaps in the teeth. Especially since you are of such a young age it should be treated properly. A deep cleaning to improve the strength of your periodontium (gums and bone) followed by a consultation with an orthodontist should be done to check if braces can be used to close gaps. If not, there are multiple cosmetic options of direct and indirect veneers to close the gaps but they will require increased maintenance and regular dental check ups and clean ups to maintain the life of your new smile.