The last iPhone that excited me was iPhone X. It was great because of the beautiful OLED display, but also a disappointment because of the increased price, the lack of Touch ID, and the poor battery life.
I am not excited about the iPhone 13. The biggest feature that I would expect is a faster screen. But Android phones have had faster screens for years now. Mid-range Android phones have them now. Apple is late to the party. And, even so, there is still a chance that faster screens are restricted to the "Pro" models and the $700+ regular iPhones are stick to 60 Hz screens.
The law of diminishing returns makes each generation of the iPhone less attractive to me. Plus, Android has evolved so much that it has caught up with iOS in many respects, so it is no longer a night-and-day difference.
So, unless Apple really makes something truly innovative, I am not getting excited over the iPhone 13.