religion is my sin

This is my first time on this site and i want to share somethig very very personal to me that i have never shared with anyone.

I do not believe in God and I am ok with that thought process.but i also know that my parents will never accept it as they think that a person without religion is a person who is on his way to sins. Just to pacify them I participate in worship rituals and daily offerings to God, but i do not believe in a single word or action. I feel guilty of participating in the things that i do not agree with but i feel helpless.