Article 6JTRE How to Install Jagex Launcher on fresh Linux Mint Virginia account?

How to Install Jagex Launcher on fresh Linux Mint Virginia account?

by
JamesMadisonAndMonroe
from LinuxQuestions.org on (#6JTRE)
Hi, I am attempting to play Old School Runescape for the first time on my brand new Linux Mint Virginia.
As far as I am concerned, I have down all the (extremely) basic requirements of rebooting, about 3x in total, including to enable full-screen, in order for my Mint to, well.... be freshly minted.
I then went on their website, and clicked on their suggested Ubuntu/Linux download (url: https://www.runescape.com/launcher )
Their code I am supposed to copy and paste in my terminal, for your convenience, will be posted here:
sudo -s -- << EOF
wget -O - https://content.runescape.com/downlo...escape.gpg.key | apt-key add -
mkdir -p /etc/apt/sources.list.d
echo "deb https://content.runescape.com/downloads/ubuntu trusty non-free" > /etc/apt/sources.list.d/runescape.list
apt-get update
apt-get install -y runescape-launcher
EOF

I am brand new to the command line, and want to selectively draw a few items that return, so as to not post sensitive information from the processing stage.
The most frustrating part returned as such:
<pre>Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
runescape-launcher : Depends: libssl1.1 but it is not installable
E: Unable to correct problems, you have held broken packages.
</pre>

I am assuming (emphasis on assuming) I do not have a proper file launcher.
I got help from the IRC that comes with Mint, and they circumnavigated the problem down to the suspicion that "trusty" is an outdated... thing, from 2019.

This is all the information I could gather from the issue. Search engines (admittedly, only reading the first page about these issues) have been failing to help me with this question (and yes, I am highly aware this is probably a "meta-question", in general... so all help - i.e. book suggestions - are welcome).

I COULD also add another issue about downloading Mullvad VPN for Linux, also doing so by the command prompt, and it probably having an issue related to this, but I will do so upon request.

--- Thanks in advance, especially if you read my question. I am brand new here, and am very determined to stick around, and add more and more abilities to my tool kit. ---
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