Kandinsky I feel sad reading your post, firstly when you leave work as I did many years ago I found it was a two way thing, at first colleagues and friends from work would text to meet up etc but as the months years go by it’s really a two way thing you have to keep it going, as some will get the idea that you are no longer interested in their company, I found though that once you leave a place of work the others move on and tend to just keep in contact with each other, when you go out with them it’s a lot of talk about their workplace,and as you are not working there anymore you can’t really join in, I found I went into another direction and did my own thing with other like minded people who were retired, did more with the family, I still keep in touch with some work friends but my life is different now, never feel lonely don’t have time, you are certainly not too old to make new friends, far from it, but with this covid buisness going on it is difficult at the moment,