iam separated to my 1st wife for 12 years

hello good day atty:

iam 19 years olds that time went they forced me to marry my wife because she got pregnant and born my 1st child, after the marriage we live in to her parent and that is the start of my suffering because they knew i hate her daughter but they dont want me to go, everyday they scare me. went i see a chance to escape i go far away.. now iam 36 and separated to her 12 years for now. my question is can i file the annulment by my self because i try to fine her but no one can give me the address they only said she is now living in batangas but no direct location. i found my son on facebook 2 year ago but even him is scare to her mother he only said her mother have a new life and live in partner.

please someone help me what to do. iam old now and i want to start my life again..

there is still a way to pursue an annulment case if you can prove a valid ground.