Statement:
The level of criminal activities is lower in Saudi Arabia than in South Korea

In the The Most Criminal Countries rating Saudi Arabia holds position #124 ²⁰²² out of 139 and South Korea is #118 out of 139 ²⁰²².
Position of Saudi Arabia is better than position of South Korea.
Saudi Arabia is an outsider of the "The Most Criminal Countries" rating. So in most cases, you can feel safe and unlikely will face a criminal, compared to South Korea

Referencies:

1. The Most Criminal Countries ²⁰²² by Numbeo

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

   Saudi Arabia	'Crime Index' value is	24.62
   South Korea	'Crime Index' value is	26.13