iCloud is on my to-do list but not often requested. It is usually more popular at this time of year, but even so I think it has only been requested 3 or 4 times since the new iPhones came out, which is a lot less than usual.
It is one of those features that is higher on my list than it should be purely by requests, because I think it is important, but other features are far more requested.
I will add it eventually. It has been on my "when I get spare time" list for a while, but I just haven't had much spare time!
In the meantime you can copy the data to and from a computer by using Apple's File Sharing mechanism:
https://support.apple.com/en-us/HT201301 (Windows)
https://support.apple.com/en-us/HT210598 (MacOS)