How do I turn myself straight?

18m and I'm definitely gay. 100% attracted to guys and not girls at all. I live in a country where being gay is punishable by death. My family also absolutely hates gay people and would probably report me if they found out because they think it's a disability. I'm still in school and about to study in university here. I don't have a future as a gay guy and want to try atleast to turn straight before my urges take over. Is there any good and maybe proven method that will help?

Thanks for the help!