I fear that my ex is gonna win and I hate it
Why do you not want your ex to win?
I'm afraid that I'm going to lose
You should move on from your ex instead of competing with them. Being in competition with your ex delays the time you could be getting over them.
I need for them to just not win so I can be happy.
If you don't want your ex to win, then next time put in more effort than them. Besides, you shouldn't concern yourself with what is happening with your past relationships and should try focus on yourself moving forward.