What should I do when I can't bear living anymore?

Please spare me the unrelated talk and unnecessary advices, there's a lot going on with my life, I'm through a lot of mental crisis, I literally never had a goal to pursue anyway and it doesn't really matter to me.

I can't explain my situation, no matter how hard I try, I always find it difficult and too big to explain, and at the end nobody understands me clearly, like I wish I could give someone my brain for some time and have him read all that's inside of it.

I can't help but think of death all the time, most of the time it's thinking about Jannah and hoping I'll be there and thinking about what I can do there.

I just feel like I see the world for the garbage it is, and I can't bear it, I barely get time to take a breath. I don't value it anymore, I mean when there's Jannah, what's the point of loving this place?

and anyway it's not like anything is accessible to me, all my desires and wishes are either delusional, non-existent, inaccessible or very hard to reach, and all of them are barely satisfying in Dunya.

I really hope I can get some help without having to explain what I'm through, I really face a hard time explaining it. Please like if there's some Dua I can take or some plan I can follow.

I heard of this Dua: "O Allah, keep me alive as long as life is good for me, and cause me to die if death is better for me.", is this enough? and thank you.