about Recommended Category Posts

Hello, I am using the ‘Simple Blog’ from Highend theme.

I noticed that the posts that appear under the phrase “You also might be interested in” are outside the category I am currently viewing.

I would like to only recommend posts in the same category as the one I wrote to my visitors.

I looked for a way to solve this problem, but couldn’t find a smooth answer.

Could you please tell me how to change it to only recommend posts in the created category?

Happy New year.
thank you.