Just wanted to share for anyone and show that it has certainly gotten easier over the years (though this year Ubuntu 26.04 did add a new step).
You can add this PPA (personal package archive) to your Ubuntu install. Then you can use apt to do the install of the newer version.
https://launchpad.net/~deadsnakes/+archive/ubuntu/ppa
Just another alternative method, and potentially easier/faster.
I just like the flow where I know which version I'm on, and exactly the steps I took to get there. =D