Based NixOS user
I love NixOS but I really wish it had some form of containerization by default for all packages like flatpak and I didn’t have to monkey with the config to install a package/change a setting. Other than that it is literally the perfect distro, every bit of my os config can be duplicated from a single git repo.
I’ve never used Manjaro but the perception I get from it is that it is a noob friendly distro with good GUI and config (good) but then catastrophically fails when monkeying around with updates and the AUR. This is a pain for technical users and a back-to-Windows experience for the people it’s targeted towards. Overall, significantly worse than EndeavorOS or plain 'ol vanilla Arch Linux.