Statement:
The level of criminal activities is higher in Bangladesh than in Sri Lanka

In the The Most Criminal Countries rating Bangladesh holds position #18 2022 out of 139 and Sri Lanka is #86 out of 139 2022.
Position of Bangladesh is worse than position of Sri Lanka.
Bangladesh 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 Sri Lanka

Referencies:

  1. The Most Criminal Countries 2022 by Numbeo
    The countries in the rating sorted by 'Crime Index' in descending order.
    Bangladesh 'Crime Index' value is 63.06
    Sri Lanka 'Crime Index' value is 40.97