I successfully used the instructions from https://linuxize.com/post/how-to-install-gcc-compiler-on-ubuntu-18-04/ to upgrade gcc version before, but they don't work for gcc-14. How do I install gcc-14 and g++-14 on Ubuntu 22.04 and 24.04?
SnapOverflow
GCC-14 (and G++-14) is available in the Universe repository for Ubuntu 24.04, as evident in the Ubuntu Package archive.
It is equally evident that this package is not available for Ubuntu 22.04, so installing this on 22.04 will require some third-party interference, or you have to compile it yourself.
See here on how to enable the Universe repositories.