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For a lot of distro’s you don’t need to use a terminal to install things if you aren’t comfortable with that. While I believe learning to use a commandline a little bit will always be beneficial, you really don’t havo to. Take a look at linux mint for example, which has a “store” for packages.
When I used Mint, I found I’d typically get outdated versions when downloading software from the “store”, sometimes to the extent that it outright wouldn’t work. It was because of that I found myself needing to learn to use Terminal.