Installing apps on Linux

I want to pick an open-source replacement for Microsoft Store, Mac App Store (app stores, flatpak, appimage and package helpers for linux). Below is a list from Open Source Everything (CC BY-SA 4.0), in the order its website shows it. The order is a starting point, not a verdict. - GNOME Software: GNOME Software is an app store for Linux computers that lets people find, install and update apps and system software. It is meant for everyday Linux desktop users. [Easy setup; Linux; replaces fully; GPL-2.0; https://gitlab.gnome.org/GNOME/gnome-software] - Gear Lever: Gear Lever is a tool for Linux that helps you manage AppImage files, which are single-file programs you download and run without installing. It is for Linux users who want to add these apps to their menu, keep them organized, and update them. [Easy setup; Linux; replaces partly; GPL-3.0; https://github.com/mijorus/gearlever] - Flathub: Flathub is the website where people find and download Linux apps, which are installed through a shared app store system. It is meant for everyday Linux users looking for software to install on their computers. [Advanced setup; Linux; replaces partly; Apache-2.0; https://github.com/flathub-infra/website] Setup rating: "Easy setup" means you can install it like a normal app, use it in a browser. "Advanced setup" means you must run it on your own server or use the command line, or it is a tool for developers. Full details: https://opensourceeverything.org/data/groups/linux-app-stores.json Before recommending anything, ask me these three questions (one at a time, in plain words): 1) Which device or devices will I use it on (Windows, Mac, Linux, Android, iPhone)? 2) How comfortable am I with technical setup: only installing apps from a store, happy to follow a step-by-step guide, or comfortable with servers and the command line? 3) What is my budget: free only, or willing to pay for hosting or support? Then recommend one to three projects from this list only, and for each say why, using how fully it replaces the app, its setup rating, and the devices it runs on. If nothing on the list fits me, say so plainly instead of stretching.

Read the list of open-source projects at https://opensourceeverything.org/data/groups/linux-app-stores.json. Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do. My project or idea: