Sometimes, parents wanted their childrens to believe in their religion. But, who controls yourself is you, not your parents (even in Christian, God is who controlled us).
So, it's up to you, what you are believed in. But you should be patient, because your parents can mad at you. Don't give up, when you're an adult, you can pick your own religion, just like my mom....
My grandparents aren't Christian, but my mom is believe that Jesus is our God. And I don't know how she can be a Christian right now, but I know that she is amazing.
If you not believed in Christian, that's okay, my mom's story is just an example. Don't make it bothers your religion.
Hope that works