Welcome to GN, London1948, if you're new. Your first post has had a bit of a roasting, uncalled for imho as none of us knows your family circumstances. If you stick with us, you'll find most people do actually want to help, as you can see from some of the posts above.
I haven't seen any of my cousins for much longer than 8 years. Obviously we're not missing one another , but there's been no fall-out, no drama. If any of them happened to be in the neighbourhood I'd be delighted if they got in touch. Not by a knock on the door though. I agree with Hetty that a friendly note might be the first step to making contact, or a text if you have a number. All the best.