They kept it on the down low.
I also looked up casualty figures for when South Africa was waging war on Namibians, Angolans, and other peoples in Southern Africa (1966-1990 - the “Border War”)
Highest estimate is 15,000 black African civilians and armed combatants dead. A bit more than total casualty figures from Israel’s war since the First Intifada.
There’s been 31,227 Palestinian fatalities between 1948-2021, the highest peak was during Israel’s illegal invasion of Lebanon in 1982 with over 10,000 Palestinians killed.