Nix is a big rabbit hole. You can use it as a normal package manager, but there’s a lot more.
You can also use nix-shell to temporarily install packages, it drops you into a shell with your package and that package is gone when you exit the shell. You can also declare a shell using a shell.nix file with environment variables and packages you want (including specific versions) and enter that shell by running nix-shell.
You can also declare your full user environment using nix home manager. Using a home.nix file you can list packages you need and configure everything. That also makes it easy to backup your user environment by just copying the home.nix file.
Something I do kinda like though is that we often don’t translate English things or names. Ask a Dutch child who Spiderman is and they’ll know it because we don’t call him Spinman or something like that.