NannySue45, oh dear, you've got yourself in a pickle. You have a husband, a daughter, granddaughter, a son and friends. Maybe you are depressed, that may be why you're feeling so negative about life at the moment.
I'm an only child and love it. My husband is one of five, and I know what I'd prefer. They have very little to do with one another and on the odd occasion they do get together, it isn't a pleasant experience 🙄.
You can get caught up in how "wonderful" other people's lives are, their "happy" families, "exotic" holidays to far flung places, but things aren't always as they seem.
Suggest doing things with your husband, be friends with him, visit garden centres, have lunch out, go to the cinema ... Visit your daughter and grandchildren for the weekend. Invite your son for dinner.
It's easy to do nothing and be disappointed that people aren't coming to you with offers, but if it bothers you then you have to put more effort in.
There are loads of clubs available in most towns, I'm sure one of your friends would be interested in attending them with you.
Maybe you and your husband could join a club together or go swimming, a coffee and chat afterwards with other people may bring on new friendships, you never know.
I'm very happy with my own company, always have been, but I can understand that some people enjoy the company of others.
Please keep off things like Facebook, I've never been on it but have heard that lots of people post photos of every possible "look at me" situation to convey what a "fantastic" life they lead. But you don't see the whole picture of their lives.
Be thankful for what you've got, not sad for what you haven't got.
Nobody's life is perfect, just make the most of it 💐.