Then literally just use Arch. I don’t understand why people want Arch but then install something different. If you don’t want to go through the install process then it’s honestly just not for you, but if you really want to try anyway give EndeavourOS a shot.
The real question is, why are you considering Manjaro in the first place? What does it do that a different distro, without all the hate (which I personally think are 100% justified), doesn’t do? Why “risk” it?