Definitely not a foreign feeling here. I'm 20 and doing alright in practical terms, yet personally, emotionally, mentally, socially.. yikes. Don't beat yourself up over it or stress too much; you're not alone, that's for sure. Try to find contentment with yourself before worrying about partners; I wasted a good year of my short life prioritizing finding someone over.. finding myself, I guess. And luckily mental health is becoming very well understood and many courses of treatment are available. But I definitely get what you mean; it's a shitty feeling and it's hard to change perspective when you're struggling with it