I don't think you'd be overwhelmed with either the Prusa or Bambu units if you're comfortable learning from Youtube university.
Their are extensive online sources of files at thingiverse.com, printables.com, makerworld.com and some others where you can download a huge amount of items that range from simple to complex to print without having to do any of your own designing. On the Bambu unit, you can even browse the files on their site(Makerworld), download them to the app and push them remotely to the printer all from your phone...or at least you can on the P1S and X1C...assume the same functionality is on the others.
As you learn the machine and the settings and what PEI textured sheet vs smooth and what brims, skirts, wall loops and infill % mean and how they impact your print quality you can start playing with the different colors, multi piece prints etc. The operation of the machines (or the ones I listed) are generally pretty good...keep them clean, keep the filament stored properly(dry) and they do what you ask of them very well.
Most all of us learned this addiction/hobby by Youtube U so I think you can too if you want!
And yes....multicolored prints are super fun to both use and show off!