I don't think your parents or you are doing anything wrong here.
They are not forcing you to do anything. They asked you to join in and you refused.That is very different from coercion where people suffer or are threatened with violence, being disowned etc. You have it very easy compared to many who reject their parents religious beliefs.
What you are going through is just a normal part of growing up. Everyone has these sorts of conflicts with their parents when they don't conform to their parents expectations.
May be your parents don't approve of your choice of uni course or job or partner. It could be for selfish reasons or because they want the best for you. The point is, on the path to becoming an independent adult you are going to make choices that your parents don't like.
It's not easy but you just need to put your foot down. Your parents won't like it, they may be disappointed and may try to make you change your mind.
But eventually, if you stick to the guns, they will realise that you're not going to change your mind, that you are your own person and that they have no choice but to get over it.