@Lindisfarne
XAPK files can be confusing because they may include the APK plus extra OBB data, so they do not always install like a normal APK in Waydroid. Extracting the XAPK and placing the OBB files correctly can help in some cases. For beginners learning APK setup basics, this Android APK setup guide (https://smartplayhub.com.br/)may also be useful.