iPhones tend to send close to the same types of info back home. When started, idle, inserting a SIM, on the settings screen, even when not logged in. Like, its very similar even when you look at comprehensive lists which a lot of people either don’t know or ignore. I’m not saying that there aren’t specific benefits or reasons to feel more comfortable with Apple. But saying its because they intrinsically are more private, I feel like that’s a bridge too far
Check out Heliboard (also on F-Droid) and follow the instructions to enable gesture typing. I also suggest Futo for on-device voice to text.
What specific apps are you using that you can’t deal going away from? Other than some social media or gamr or something. Even then it seems like there are replacements a lot of the time