I want to connect my family devices in a single network wherever they are with no/minimal extra software installing. The best solution I think is with VPN, but I don't want to use that VPN for browsing the web, just to connect this devices with each other and maybe RDP.
What I found right now is 2 solutions:
Microsoft Azure free Private Network to create personal VPN and connect these devices to it via built-in Windows and Android VPN provider (I don't know if this is how this works)
Using SoftEther to create a VPN server on my PC and connect those devices with the same built-in providers (similar to this but on personal device)
Where are the best solution for my situation or maybe a better and simpler one is available.