Just a wondering.
Can I download a Deb package using another source to download it?
Then transferring it to my distro of Linux as it is incapable of connecting to the net.
The package will provide help in remedying that annoyance.
Yes, you can do this... but you will still be annoyed with the method. Very annoyed, I would guess. The reason is
dependencies. If you transfer a .deb file to your Mint machine, let's call it test.deb... you will need to run this command,
sudo dpkg --info test.deb
to see what dependencies are needed for that program to work. Then you will need to go get those .deb files and install first. But wait... those dependencies may have their own dependencies too. This can get very ugly, very fast, in some cases. But actually, this is the way things used to be done in the early days of Linux.
Okay, some programs have everything they need without further dependencies. So these would not be too bad for you to install. The command
sudo dpkg -i test.deb
would install our example file.
This is one of the big reasons to get your internet working with Mint. The Synaptic Package Manager, or Software Manager, or the
gdebi utility, will all assist you in installing working software with all the dependencies satisfied.
One more thing... I am not familiar with "snap" and "flatpak" packages except to know that they are self-contained software with everything you need to install and run. You might want to Google up more info about these methods to see if they can help. But not all software will be available in these formats, so it's a bit of a guess whether you'll find what you want.
Good luck!