I can relate to that Argeles a similar thing happened with someone in my family and they started again from ground zero in a new area. It's tough to make friends as a young bloke when you know no-one in the area, are in a brand new job and trying hard to leave an old life behind.
My DH's father worked abroad and they were constantly moving around. It was hard for DH to make lasting friendships and this being before the days of mobile phones, social media and even email, he fell out of touch with the few friends he did have.
Once they all left school and went to work or uni they were spread not only all over the country but all over the world. Keeping in touch took real effort. He didn't go to uni, so didn't make good friends that way.
He settled in his parents UK 'lock up and leave' home and got a job but having never gone to school in that area, he knew virtually no-one. He made a few friends through work, but not lifelong friends, just mates through circumstance iyswim. Then left that job and started again in a new city.
He got married (met wife at work) and made some 'couples' friends, mainly his wife's old university mates, but when he decided to leave the marriage (and the area) the friends stayed on Team Wife, understandably, as they knew her first.
So when I met him he literally had no friends in his life at that point, outside of mates from work who he only saw socially for drinks after work. Which is not really the same.
I found it strange because he is a perfectly normal, likeable and sociable person but his explanations made sense.
Having been married a very long time now, I can safely say he makes friends and keeps them no better or worse than most other blokes. He's never had a tight-knit gang of 'lads' but neither is he friendless or socially inadequate. He has a small handful of mates where their friendship doesn't rely on me having a close friendship with the wives in order to keep it afloat. I am friends with the wives, but that's not what drives it, if that makes sense.
In fact the couple we would probably consider to be our 'best friends' for almost 20 years now are DH's friend and his wife, as opposed to my friend and her husband, if that makes sense.
But when I married him he was technically friendless.