Versioning and code sharing

Question

Hello, I have the following question. We have a team of 4 Devs, where we happen to work on the same project at the same time. The sources are on a "server" machine on the local network. I’ve tried implementing Git, but found it complex for this simple structure. As we are used to using in a centrealized way, I think q SVN would be the best solution. With SVN, it is possible to open the same source on different machines? How does merging the changed codes work? It avoids overwriting the codes?