It depends on your android version. Usually, your savegames are stored outside the game folder on android, so even when you delete the app, you should keep your saves.
However, since you tried to install 0.19 while 0.14 was still installed, you might have corrupted your savegames. There is a savegame with the full harem from the end of 0.14 on my discord if you want to grab that. If you are on Android 11 you have to do some extra steps though, since Android 11 fucks with file permissions.