I don’t think you need to buy expensive brands (although I have some) to successfully one bag travel. My progression when I started out to now was just a succe

I don’t think you need to buy expensive brands (although I have some) to successfully one bag travel. My progression when I started out to now was just a succession of YAGNI realizations until I got to a point where my trusty Z28 backpack is spacious. The biggest factor IMO is becoming confident and comfortable with skirting some social norms and either planning your trips or establishing yourself in such a way that it is acceptable to do so. Once that’s out of the way it’s fairly easy to make 3 outfits mix-match into a week, and launder as needed on the way. Clothes are the bulkiest items and everything else is tiny by comparison.