Statement:
The level of criminal activities is higher in Nigeria than in Bulgaria

In the The Most Criminal Countries rating Nigeria holds position #17 2022 out of 139 and Bulgaria is #92 out of 139 2022.
Position of Nigeria is worse than position of Bulgaria.
Nigeria 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 Bulgaria

Referencies:

  1. The Most Criminal Countries 2022 by Numbeo
    The countries in the rating sorted by 'Crime Index' in descending order.
    Bulgaria 'Crime Index' value is 38.37
    Nigeria 'Crime Index' value is 64.09