If you feel up to it, I recommend trying to use the Architect installer. It isn't really recommended for new linux users, but it has worked for many where the regular installers don't.
Just follow this tutorial and you should be good. FYI, when you get to the choosing Desktop Environment, you also get to choose if you want the full or minimal version. I personally choose the minimal one because it takes less time to install, and I can install the rest of the packages later if I want them (I don't like having stuff like thunderbird, firefox, libreoffice, etc preinstalled via full version).
I recommend installing via UEFI and not legacy.
Well, Welcome to Manjaro! And I hope that it'll all work out for you. After distro hopping around so much, I finally settled with Manjaro and never regretted it.
If you have any questions, we are always here to help.