I don't want to vote
Is voting not interesting to you?
I'm afraid of a vote not going my way.
Voting is ultimately a choice. You are free to make that choice in whatever capacity you wish.
I'm just not interested. I would prefer things to stay the same.
That's perfectly fine, we live in a country where we can make our own decisions! You don't need to feel bad, because not voting is also sending a message that you don't want change.