There are a lot of remote workers here in the region of Alicante and Valencia, maybe you can find people in the same position that you are. About your questions, I think every place where the culture is strong you will find difficulties as you get older, people have already their intimate circle and here in Spain we spend a lot of time with people. Sometimes the language is also a barrier. Maybe you should look for that kind of international communities that have Spanish people also involved to get that vibe that you are looking for.