I find that the popular apps for basic operation from F-Droid do a very good job of not screwing with the user either. I'm talking about DAVx⁵, Etar, Fossify Gallery, K-9/Thunderbird, AntennaPod etc. No nonsense software that does what I want and nothing more.
I've been running deGoogled Android devices for over a decade now for private use and I've been given Apple devices from work during all those years. I still find find the iOS devices to be a terrible computing experience. There's a feeling of being reduced to a mere consumer.
GrapheneOS is the best mobile OS I've ever tried. If you get a Pixel device, it's dead simple to install via your desktop web browser[1] and has been zero maintenance. Really!