Statement:
The level of criminal activities is lower in Croatia than in Montenegro

In the The Most Criminal Countries rating Croatia holds position #127 2022 out of 139 and Montenegro is #87 out of 139 2022.
Position of Croatia is better than position of Montenegro.
Croatia 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 Montenegro

Referencies:

  1. The Most Criminal Countries 2022 by Numbeo
    The countries in the rating sorted by 'Crime Index' in descending order.
    Croatia 'Crime Index' value is 23.99
    Montenegro 'Crime Index' value is 40.39