> use syncthings (https://syncthing.net/ https://syncthing.net/), but I might delete a file by accident and lose it forever Syncthing supports file versioning.

> use syncthings (https://syncthing.net/ https://syncthing.net/), but I might delete a file by accident and lose it forever Syncthing supports file versioning. The staggered file versioning might be the best option for important files. As always, anything important should have copies kept on different devices (don't rely on this feature for backups). https://docs.syncthing.net/users/versioning.html https://docs.syncthing.net/users/versioning.html