Hi. I know the most privacy-oriented (and best-working) phone OS is GrapheneOS, but I was wondering about other, less well-known ones, such as VollaOS (modified Android), Sailfish OS or Ubuntu Touch. Are they private? Do they work? Can I run Android applications on them (VollaOS and SailfishOS) without too much effort? I like using Linux, but I rely on many Android apps, such as navigation, mobile banking, the Garmin app, and many others. Do you have any experience with these operating systems?