Sounds like you have a similar dilemma to me haha.Just being totally honest here, not really digging this Pixel 6 Pro. It's over the borderline of too large a device for me, and for some strange reason my iPhone 12 Pro Max feels more compact and much smaller, even though it's the same size or in some cases even bigger.
Typing on the phone, it feels hollow or cheap if that makes any sense? My 12 Pro Max feels rock solid typing, meaning the feel of it, not the haptics, but like what's behind the phone feels solid, same with my Pixel 4 XL feels solid too, but not this Pixel 6 Pro.
My Pixel 4 XL just feels so much nicer to hold and grip on to, and the more compact size is darn near perfect to my liking. Man I love the 4 XL, except the mediocre battery life.
But also the iPhone Pro Max smartphones are so close to be nearing perfect if they opened up iOS more, allowed some customization, and made a few changes, I would love them.
So how I go about returning this new 6 Pro? Maybe try the regular flat Pixel 6.
I don't think it feels hollow though but I have heard others say that.
I am still contemplating picking up a regular 6 to compare myself.