hello and welcome to HCM forum,
i am glad you wrote in , first of all i would like to inform you that for the teeth to align properly ,it takes 6 months to 1 year , and from your dental history, its clear that you have had braces for almost 2 years but according to you, teeth are still malaligned, i would recommend you to take a second opinion
from an orthodontist before taking off your braces.
lingual braces or veneers will not give you satisfactory results , therefore stick to normal braces instead.
Kindly be patient and visit your orthodontist soon.
i hope i answered your query,
i wish you good health.