It's a similar story for people in the States in regards to the note 9.
No black version !
Samsung will say they release colour variants and storage and ram variants of phone to countries dependent on buying trends and current climates.
They however typically release more colours not too long after an initial launch.
Current Phone ~
Samsung Note 20 Ultra 5G SM-9820 _256Gb SnapDragon 865+
Samsung One Ui 2.5/ Android 10.