VPN to friend in other country?

Many people use VPN providers on holiday, such as ExpressVPN or NordVPN, for example. Stream Netflix series only available at home (in this country). Could I also set up a VPN in my FritzBox home instead of subscribing to a VPN provider? Would that be the same or not?

Or another scenario: If I have a friend in another country where certain content is available, could I build a VPN connection to his router to view content that's locked in my country? (Apart from that he has to trust me and I use up his data volume)

You have to set up an OpenVPN server on a computer, Raspberry Pi, to connect to. There are tutorials on the internet.

Here is discussed how to build such a server. But would my reasoning work in principle? In addition, that's easy with some routers, without Rasperry, right?

Arrives on the router. I do not think so.

Have managed to build a VPN with my FritzBox, now theoretically with my mobile Internet home print what. The only problem I have is that the server address changes daily, which means that I always have to change the settings on my phone.

Lol I did not know about such a function. Which box do you have?

yes, dynamic ip, can be

FritzBox 3490. And you know how I get rid of the dynamic IP? So I always have the same VPN server?

This has something to do with your internet provider