Plagiarism is not about stealing content from just on steemit, it's from anywhere. You didn't write the post or take those photos.

Here is the link to the content you stole:
https://theculturetrip.com/africa/ghana/articles/14-mouthwatering-west-african-dishes-you-need-to-try/

This is illegal to steal content that someone else wrote and post it as your own. Look into copyright law and know that not only do you put yourself at risk, but also the steem blockchain by taking content that doesn't belong to you.