I'm not going to allow my parents to get a divorce yet
Why don't you want your parents to get a divorce?
They need to stay together because they got married and it is a vow to stay together.
If your parents want a divorce, don't force them to stay together. That is their life.
I don't want them to divorce, it is not fair to me.
You may not agree with the divorce and that is fine. But your parents are allowed to do as they wish. They may be better able to care for you and themselves if they are split up.