I have one friend (Heidi,) who I have known since I was 5, who lives 30 miles from me, (we are 50-ish now, and both have kids over 16,) and I see her once every 2 months for coffee and a chat. Apart from that I don't bother with anyone except DH and my 2 kids.
I had quite a lot of friends in my late teens and early 20's, who I went out clubbing and partying with, and also on holiday with. I never went to uni or college and started work at 16. In my late 20's and early 30's I had lots of 'mummy friends,' and went to loads of kiddie parties and theme parks with them, and on lot of school trips.
Once I hit late 30's my friends dried up, (as they moved on, and moved away etc,) and I found myself at 40 with not a single friend. (Even 'Heidi,' who I knew from the age of 5 was living 300 miles away at that time, and I didn't see her for 4-5 years.) It got really hard to make new friends, and over 3 or 4 years or so, I got used to just being alone and entertaining myself (when the kids and DH weren't with me!)
This past 10 years, I have just found life easier without lots of friends, and although it can be a bugbear occasionally (like I have no-one to socialise with and go out with except DH and my kids, and 'Heidi' who I see 6-7 times a year,) for the most part, it's a blessing, as I don't get any hassle from anyone.
Basically, when I think about it, over the years I have been used, and shit on by people who were meant to be friends.They all started out OK, but eventually I was stabbed in the back, bullied, hurt badly, or ghosted by them. (Or all 4 of the above!)
So I don't get close to anyone now, and keep people at arm's length. I have had a couple of women (fairly recently,) try to push their way into my life big time, by inviting me to their house, and then expecting an invite back. (I never went to theirs,) and asking for lifts to places. I make excuses every time. I don't want to be their friend. I am civil and polite and friendly, but that's as far as it goes; I can't be arsed.
Doesn't sound like a great way to live for some I guess, but it suits me. DH is exactly the same. We have each other and our kids and that's all we need. If DH left tomorrow and the kids left the country, I would be alone, but frankly, I don't care, and prefer it this way. No close friends, no hassle, or anyone using me, or shitting on me, or falling out with me and causing me grief.
And I would still have my cats! (And I'd still see Heidi every other month for a coffee!)
So don't feel too bad @shirl9494 there is nothing wrong with you.