I think you need to work out what would make you happy.
I've not many friends, they have taken me ages to make, and am also very insecure. But I realised they're different to me, they really seem to enjoy social occasions, hanging about with each other all day, going to each other's houses non stop etc.
I am sunk after just a few hours out with other people. I realised they don't see this as normal, and perhaps it isn't, but I can't think enough when there is a group or a crowd and it stresses me physically...I went out with them yesterday, they wanted to stay all day but after 3 hours I needed so badly to leave.
They were worried and thought I was upset, I wasn't, I just needed my own home, some mental space, and some lunch!
However at school I deal with them very well, but there I know I can make idle conversation and no one will insist I do anything else. I don't have to go out for the mums evenings, which I find too hard, I can just talk for 20 minutes twice a day and it's enjoyable.
People accept me like that now, and I accept myself. It's been a gradual process whereby I set my own boundaries, say yes or no to things, and they have begun to trust me and like me a bit.
If someone bestowed 20 new friends on me who all wanted to be sociable and go out having fun with me, I think I'd be terrified.
It's a case of getting a bit of what you need, recognising it and going from there...also owning your own idiosyncrasies, your negative and positive attributes and needs. People are generally happy to be your friend if they think they are making you happy. If they're afraid of offending you, or making you feel terrible (for example: Friend: 'Oh, I can't talk right now' You: 'oh God it's me isn't it, you hate me, I know I'm an awful person and no one likes me' Friend:'??!!!??') then they will back away slowly as that is high maintenance.
HTH a bit. Be a bit more okay with who you are, including the level of friendship you are comfy with. People will learn what you need and take it or leave it. You will end up with at least one friend. You've a husband who loves you - you're doing better than a lot of us!