Hello everyone , hope you're having a good day

I'd like to talk about my problems and would appreciate your help of any kind , that means a lot.

I'm not a native english speaker so pardon my language.

Here's my little story

So I'm 23 and I feel like I don't know what to do about myself. I come from a poor family and we could never enjoy life at its fullest and most of the times it was kind of all about surviving , rather than enjoying. Both my father and mother are too kind and as the only child in the family I'd have all the attention in the house. But things started to happen from the very early childhood. My father was working so whenever he'd come back I'd sleep , and my mother used to take care of her parents because of their illness (first her father when I was 5 and then her mom when I was 10) so basically I mostly grew up independent , a child who hasn't seen much . But despite those I managed to stay active till 13 , have friends , enjoy school , attend birthdays , participate in events and so on. When I turned 13 I became addicted to gaming and thats when It all went wrong for me. I started to not study , not look for new friends , not being interested in life in general aside from this virtual world.

Fast forward to my graduation , I managed to finish school and get in university . Despite all of that my addiction , even though it was kinda weak at that time (2 years in particular , before finishing school and starting my 1st semester in university) I felt as if I didn't belong there.

So I've been chasing girls and girls would take interest in me , but I was never able to make anything happen on a romantic nor sexual level. I've never had a social group , a gang , to do things with my group together. I had friends from each circle but my social inactivity was killing that as well. I haven't partied well , nor enjoyed my time with friends , feels like my life is miserable. I live with Fear and Anxiety , I distrust people and always expect the worst outcome from their actions , I fear the rejection. But whenever I feel like I'm in the right place I'm full of confidence , I lead , I do everything without fear.

One more thing to know about me is that I can talk about literally anything , except for life things like romantic , intimate , social activity stuff which should drive people like me.

Recently I've started studying Psychology to better understand myself , hit the gym , think positively , try to bond with my university friends but it's hard. 

What would you advice me to do?