Ever felt you had everything in life except that one thing, what is it for you?

For me I'm good at everything and had excelled in academics, got praises from teachers but I had insecurities about my looks although many people said I look good. Being extremely fair and tall i thought that I was perfect in written but it actually i get insecure about my looks a lot due to that I stopped going out of my house tried everything to not come across people, eventually i succeeded in my career, still learning and improving but kinda at a good place. In all this thing i never dated anyone, never asked out anyone, I still remember I got a crush on dentist whom I went for a checkup in 12th std, never was even able to make eye contact. I started staying away from crowds I would either study or just watch YouTube, did this straight for 3 yrs after college but now I repent cuz i don't have any friends neither had been in any relationship. So that's about me deep down i cry for that one missing thing in my life which I don't know how and when will I fulfill.