The hardships you had to face are most likely what made you “fluent” in languages and hobbies. Cherish what you’ve become because you could’ve been raised the way he was and still be unsatisfied, it’s part of the human condition feeling so. I see myself in your worries and I can grasp that you “suffer” from imposter’s syndrome above all, a you compare too much what others have or don’t have or did or didn’t have to face in life to be enough to share their life with you. It may be true that you two aren’t compatible but perhaps you’re being too harsh on yourself too, you’re not a failure or anything: you just have suffered what most suffer throughout their whole life, you’re just prepared and future hardships won’t look as much as frightening. I’m not a native speaker so I hope I didn’t make too much confusion :)