Apologies for the late reply but this is a subject I have a lot of thoughts on. On paper, Gamepass is a mircale of existence and the best video game bargain out there but the games on it don't appeal to me; it's mostly first party Microsoft games, big Western triple A games, and fairly recent indie games, with few exceptions.
The first category I tend to find bland/boring and lacking quality save for Bungie Halo and Flight Sim, the second I personally see as almost always soulless Hollywood-esque cashgrabs and the third I find to be very samey and low quality most of the time. It undoubtedly works in practice for a lot of people too, just not for me.
The root of this is that I pretty much just described the Xbox One's (and so far, Xbox Series') entire library. I have a large preference for Japanese-style game design for a lot of personal reasons and the platform is incredibly droughted of that even in the West.
Currently, the Switch is the go-to platform for Japanese games, with a considerable deal of other stuff still getting released for PS4. Many feel though that major developers and PS players (the people who dictate which platforms are financially worth it to release games on) there are also losing trust in Sony after years of home market-sidelining Westernisation practices (in the footsteps of Xbox funnily enough), and PC versions of Japanese games have gotten exponentially better in just the past two years, along with releases for the platform only growing more common. If it puts my taste into clearer perspective, I utterly treasure PS2-era games like Ico, Silent Hill 2, Viewtiful Joe, Klonoa 2, the likes of which are in very short supply nowadays in the form of the practical handful of games like that released in the 8th generation and more passionate development teams like Platinum. For indie stuff I stick to OneShot, Yume Nikki and its fangames, Cave Story, Undertale.
Due to everything I just laid out, I only see it as wise for myself to make PC and Switch my main platforms with my PS5 as a backup for bad PC/switch ports, no PC/Switch versions at all, timed exclusivity deals, etc. A Gamepass subscription for me is nearly 100 games I don't care about, don't enjoy, or already own somewhere else. A Series X would be rather nice to have for any used physical games/what my village's public library has and the few instances of games that make it onto Gamepass that I'm interested in, but that's nowhere near enough to warrant me spending any considerable amount of money for one.
TL;DR I'm a weeb when it comes to video games who likes stuff that makes me feel impactful emotions and Xbox barely has that