I have read many of the posts on telegram and using Flatpak here, but I am quite new. I have tried downloading the telegram-desktop using the sudo apt function on the terminal. I get as far as typing in my number into telegram and it tells me something to do with using an old version of something.
I read a bunch of threads on this and some people in 2021 were running an old version of the software, but it was messy.
I also read about someone using Flatpaks, that sounded promising so I am posting this here so that hopefully someone can post a list of commands needed to be punched into terminal in sequence so that I can use flatpaks and telegram, and hopefully after the command sequence someone can explain what it is doing and why it has to be done that way.
I requested some books on linux from the library so hopefully that will help.
Flatpacks are a (relatively) resent-ish method of delivering apps in neat packages that contain all the needed dependencies of software libraries (to simplify it a bit). In broad strokes, the advantage here to developer is that its’s simpler to publish to more different linux distros, the downside is that it takes a bit more discspace and affects system efficiency. Similar methods are appimages and snaps. Do a web search for more info, pros and cons. My advice is, to save disc space, you should install native apps rather than these packages to save space, if possible, but some apps are not available natively.
Flatpaks are mostly referring to those found from flathub (but they can be from elsewhere), aka https://flathub.org/, a hub for flatpaks.
I believe you’re looking for Install Telegram on Linux | Flathub For future reference, I suggest you learn to check there “Available Architectures” (does it have aarch64 for L5) and approximate size (do you have space). Then just look for blue “Install” button that will give you the command to pass to console. Before doing that, however, install flatpak using sudo apt-get install flatpak [I think I remembered that right].
You’ll find those from the app Mobile Settings (not in the Settings app).
And setting up Flathub (sorry, forgot): PureOS Flathub Setup | Flathub (flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo)
And btw.: flathub seems to have a new mobile apps category (may not mean that they work with L5 but probably fit screen better). See: Mobile Apps | Flathub