I use both devices and to me I prefer the iPhone for its simplicity in UX of things such as audio handoff between devices with airpods, the ease of using their “Find My” network. And being able to use iMessage/FaceTime seamlessly with other apple users without them needing another account to use Wi-Fi calling/messaging. The camera/photos/iCloud integration is much better too.
Android is much better for various little apps. They are more permissive on the App Store and even if they weren’t you can easily side load. Things like emulators are way more convenient as well as various other self hostable projects that can extend the life of the device even when it’s no longer adequate for communications.
Personally I prefer the ubiquitousness and of the apple ecosystem and I prefer the smaller form factor for phones and so the iPhone 13 mini is my preferred device. If there isn’t another small form factor phone from apple when it’s time for me to upgrade then I’ll probably try to look into whatever the latest fairphone at the time is (if it’s still supported in the US)
If the manufacturers would stay out of Google’s way and let there be a unified android experience without manufacturer bloat then it’d probably be the best as pixels are fantastic phones with good support, they are just a bit too big for my liking