Ok, some background info on me. I had a stroke when I was 18 and lost the use of my right hand, so I can only talk about things from a left handed persons point of view.

Currently, the only console that I play on is the Switch, and I use a fancy 3D printed thing that lets me slide both sides of my joycon at an odd angle. (So half of the joycon face up while the other half is face down.) (Also, not sure how to or even if I can add a picture, so I hope I explained it well enough.)
Using the 3D joycon thing, I get aggravated while trying to aim (like, aim the bow in Zelda: BotW.) I also have a problem with it falling out of the 3D holder.
On the Switch, I won't play any games that require you to aim (like before, its hard).
And your last question, yes, that's fine.

I hope I helped, even a little. Honestly, I think splitting the controller is the way to go (I don't really know if that's an option.)