the majority of issues you encountered were self-imposed.
How? I’ve installed Debian with KDE, downloaded the .deb from steam website, learnt to install that using sudo dpkg -i steam_latest.deb, opened the app and i’ve been welcomed with a text inviting me to press enter to continue, pretty simple. The program downloaded stuff, steam is ready now. Not bad. Repeated the exact same thing on Debian with xfce, that apparently doesn’t come with a software installer, nothing works. An alert says i need to download dependencies (i know dpkg doesn’t resolve dependencies). Where’s the “enter to continue”? How is this my fault??
If i got a beginner friendly distro how will i learn how to use linux properly?
So if an app is not a package manager i'm fucked?
I tried, it did nothing, i went online to search for a solution.
This is mental. This shouldn't be a thing even for pros. I need 15 minutes to install an app? Sorry i won't go out this evening, i need to install an app and god knows what can happen.
Well, yes, of course. Also i read some contradictions in your post: the installer only installs what is supposed to, but it needs dependencies to actually make the app usable. But that's what package managers do, right? Different apps could use the same libraries but also different ones, so the system could become bloated nonetheless. I don't see how is this beneficial for the user.