https://github.com/iDescriptor/iDescriptor
Currently it supports AppImage, but Flatpak version will possibly be available in future: https://github.com/iDescriptor/iDescriptor/issues/1
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
Of course, in fact you do not have to change right now, or even next month. Instead you are in a great position when you already have a device because it means you can take the time you need to prepare for a transition without any rush. The problem IMHO is ... if you repeat the cycle. If in few years, or whenever you do change phones you say, again "Switching isn’t necessarily easy or doable for everyone" while having done nothing to change your situation.
Please, don't rush a change and make it painful. Take the time and use the resources you have... but do something, even if a small thing, to go where you want to be. Do not stay stuck in a place you do not even enjoy.