if you want to rejoin matrimonial knot (i know you don't want, still), then,
try to settle the matter amicably with your wife involving elders/relatives/friends etc and take her back, and if, failed, file Restitution of conjugal rights petition in the Court,
and,
if you want to terminate the matrimonial knot, (which you actually wants) then,
try to settle the matter amicably with your wife involving elders/relatives/friends etc and also make an offer to return the dowry amount/articles and go for Mutual Consent Divorce which will be decided in 6-18 months, and you both will be free to live life with your wish,
if failed, you have two options,
one option is to,
file contested divorce on the grounds of mental cruelty, separation but it will take around 4-6 years,
also once you file contested divorce she will surely file/claim
498a complaint
Domestic Violence case
maintenance,
so be ready for them too,
and,
the second option is to
file Restitution of conjugal rights petition in the Court, to show your bonafide intentions to save the matrimonial tie, however, you can withdraw the same any time,
RCR will work as a safeguard to 498a, maintenance, DV etc