I feel you on that whole 2nd camera weirdness thing. For me, it added a whole new dimension, but I found myself directly talking to and looking at the 2nd camera the whole time I was speaking, which besides being distracting, changed the camera angle for my 1st camera, so that footage looks wonky sometimes when I used that view instead of the handlebar-mounted camera. I also have a half helmet and do a lot of gesturing, so that view is more "talking head" video style than "look at my helmet", which I think is super neat but super frustrating if my audio gets out of sync [I've had the GoPro footage "drift" by up to 1s after a long ride]. Some things to think about.
Definitely look into the Jaws clamp mount for handlebars and other bars - I have done some tests [vids on my channel] of mounting it in different spots on my Street Glide, and most recently I used it on the handlebars of my wife's Sportster and my KZ, both with great results. With the newer GoPros and their stabilization, I feel it's very near to rock solid, and if you can get it up a bit so it's not an extreme vertical angle to see you, all the better.
I love trying out new mounts for 2nd and 3rd camera angles... I mean, I cobbled together a fairing mount that works for my Hero 8, Max, and whatever else I want to mount on there [there's a vid where I put the 7 or 9" unicorn mount on that mount for a more extreme 360 view of the front of the bike... I may have to do that one again].
TL;DR: Buy a Jaws clamp mount and try multiple mounting positions until you find one or more you like, and then use those. Gestures can add to the dynamics of the footage as well.
-John