I think, as a Linux beginner also (~10 months), the best way to learn the terminal is to figure out what tools are useful to you and then read the manual pages or [application name] --help (if the application supports that command). Learning how to use grep will also be really helpful for troubleshooting, since sifting through logs is such a pain.
Like if you want to download a YouTube video, install yt-dlp and then type man yt-dlp into your terminal to learn about how that tool works. You can do this for basic utilities too, like cp, dd, mv, etc. and other applications you have installed. You can also use yt-dlp --help but that won't open in the parser, just the terminal. Learn by doing things that are relevant to you and branch out from there.
There are also applications that will let you read the manual pages outside of a terminal, like xman, if you find that useful. After a certain point, you'll be able to write commands with switches/arguments without needing to check what they mean first.