Statement:
The level of criminal activities is lower in Bosnia and Herzegovina than in South Africa

In the The Most Criminal Countries rating Bosnia and Herzegovina holds position #55 ²⁰²² out of 139 and South Africa is #4 out of 139 ²⁰²².
Position of Bosnia and Herzegovina is better than position of South Africa.
South Africa is leader of the "The Most Criminal Countries" rating. So it is wise to avoid visiting the country or, at least, you need to take additional actions to protect your life and belongings, compared to Bosnia and Herzegovina

Referencies:

1. The Most Criminal Countries ²⁰²² by Numbeo

   The countries in the rating sorted by 'Crime Index' in descending order.

   Bosnia and Herzegovina	'Crime Index' value is	48.41
   South Africa	'Crime Index' value is	75.37