Really what got me to learn to use the terminal more was downloading systems without tons of gui apps. Most base systems will be like that. In general my only gui apps are a file browser, web browser, and audio tools. Debian, arch, gentoo, nix. Avoid stuff like mint or endeavour if you want to force yourself into learning the terminal. The more you use it, the better you'll get. Using gui apps isn't bad, sometimes it just works better for specific actions. But knowing how to use the terminal helps for when nothing else works.