Can we turn [this](https://askubuntu.com/q/1361769/124466) question ("How do I upgrade Ubuntu 18.04 to 21.04 on i386 architecture?") into something like "I have a 32 bit computer running Ubuntu 18.04, and want to use an operating system with recent versions of packages. What all options do I have?"

That question would not be strictly about Ubuntu, but it would help Ubuntu users continue using their 32 bit computers with a supported operating system.

People still ask [questions](https://askubuntu.com/questions/1361321/how-can-i-install-ubuntu-18-04-lts-32-bit-gui-iso-found-see-added-ref/1361325#1361325) like "How to install 32 bit 18.04?"
Since 18.04 would go EOL in another two years, can we have a generic question with possible migration options?