@solene i would like to mention #SailfishOS. Used it for a few years as a daily driver and it was fun. Nowadays they released SailfishOS 5, so some iterations have passed and it seems to going strong. The Guys behind SailfishOS, formerly known as 'Jolla', were the Devs behind the Maemo-Project from Nokia/Intel and brought us the grrat pieces of Hardware auch as the Nokia N900 and N9. So, it seems well aged and in my opinion the only linuxbased OS for a mobile phone that is usable for daily use.