There is a severe shortage of IPv4 addresses. One solution was private (i.e. internal) addressing & NAT (Network address translation). Your Internal IPv4 address is translated to the single unique public IPv4 address issued to you by the ISP when the traffic goes out through the router. As I said, that public address is nothing to do with the computer and the computer is unaware of it.
Now IPv6 is different in many ways, none the least of which is the way it works. There are a lot of IPv6 addresses. One allegory is that there are potentially 55 million for every square metre of the earth’s surface. Consequently, whereas you have just the one IPv4 address you can have several IPv6 addresses for different tasks, hence the prefixes listed at the bottom of your post. NAT is a pain. One of reasons for IPv6 is to do away with it. Your IPv6 address is not translated by the router, effectively the computer’s address goes out unaltered. (As I also said, major privacy concerns with this, hence temporary addresses). As the address is the address autoconfigured by the computer, of course, it is aware of it and it gets listed by ipconfig. As the footnote in one of your posts notes, the FE address is for internal communication only so that doesn’t go out to the world, only the global address, (the one beginning with “2”), does.
There could be many reasons the computer is using IPv4 instead of 6, none the least of which is that the other end doesn’t support it. Windows will use whichever is the best for the job at the time. Why are you so concerned by it? The only time it might be an issue is if you try to connect to an IPv6 only site and there are very few of those.
What does this site say:
https://test-ipv6.com/
