You’re definitely not the only one.
My phone is too tall for me to use entirely one-handed. I can’t reach the Quick Settings or certain menus and links with my thumb, so I have to bring in my other hand to swipe down or tap the screen. This might not be so much of an issue if the smartphone was less slippy.
I would consider a smaller smartphone with mid-to-high specs, but I worry about the display. Would I struggle to watch videos/films, play games, and browse the internet? Perhaps a screen with incredibly high PPI would fix this?