May Allah make u steadfast in this test
You have to find ways to control this desire better. Simple abstinence never works for anything. In the heat of temptations, religions obligations do not hold
Understand that sexual desire is nothing but neurotransmitters in the brain. Brain can be trained just like any muscle. Work on your temptations with a professional and you’ll be controlling your desires and not your desire controlling you
Just because something biological doesn’t mean it has to be followed. This is wrong perception of today’s time. We always learn to control our biological urges like anger, fear, hunger etc. there’s data that gambling, pedophilia, theft all have biological or genetic predisposition but no society allows these people to fulfil their biological temptations!
Lastly, there’s nothing wrong in wanting something in jannah that’s haram here. Allah said there’ll be wine although it’s not allowed here. Shariah is for this duniya alone.