Here are some more nuanced ways to express similar feelings in French:
More neutral:
* Je suis malheureux/malheureuse. (I am unhappy.)
* Je me sens mal dans ma peau. (I feel bad in my own skin.)
* Je suis déçu/déçue de ma vie. (I am disappointed with my life.)
* Je n'ai pas le sentiment d'être heureux/heureuse. (I don't feel happy.)
More intense:
* Je suis au bout du rouleau. (I'm at the end of my rope.)
* J'en ai marre de ma vie. (I'm fed up with my life.)
* Je n'en peux plus. (I can't take it anymore.)
Important:
* "Je déteste ma vie" is grammatically correct, but it's generally considered too strong and negative.
* It's better to express your feelings in a way that reflects the complexity of your situation.
* If you are experiencing serious difficulties, reaching out to a trusted friend or professional for help is important.
Remember, language is powerful, and choosing your words carefully can make a big difference.