This is why the single most widely-used desktop/laptop Linux distribution in the world has a simple, brilliant solution to app packaging:
It has none. You can't install new apps.
It's ChromeOS. It has something like quarter to half a billion users, judging from the sales numbers of ChromeBooks and their supported lifetime.
Real ChromeBooks let you install Android apps, but that is side-stepping the issue.
ChromeOS Flex on a PC, which I use, doesn't offer that. You can open a Debian shell and install Debian packages in there, though. Handy for VLC.
Ubuntu, from its own numbers, has maybe 20-30 million users. Debian about a third of that. All the RH distros less than Debian, maybe a tenth.
In China, UnionTech says it passed 3 million paying users of UOS last year, implying numbers maybe comparable to Ubuntu's. Which in turn implies that most of China still runs on pirated MS Windows.
All the other distros put together come to about 10% of the number of ChromeBooks sold in the last 3-4 years.
The way to win in Linux packaging seems to be: don't do it at all.
"A strange game. The only winning move is not to play."