Hello Capho and welcome to the forums.
Feeling lonely and isolated is something you'll find many of us on these forums will relate to. I'm thankful that you decided to give reaching out here a go. It isn't easy especially if you are anxious and keep thinking people are critical of you.
One thing I've learnt in my time here is that this is quite a unique space where we get to write to other people who also understand how anxiety can make us constantly doubt our own value or worth or start thinking others are judging us.
I often turn to two older threads here when I'm feeling very alone but self doubt is holding me back from trying to reach out to others in some way. Maybe these will interest you, your input would be very welcome too if you want to write more.
It can be very difficult to move and start making connections all over again. Especially if you aren't working which at least forces you to mix with colleagues.
If you want to talk more we would love to hear your story. There is no rush to find solutions or hobbies, if you just feel like company these forms are always available and the social zone especially has lots of threads which are lighthearted conversations.
Hope you feel like returning.