Hi @amoeba12,
I hope you are well today and thank you for your question.
Do not change anything in the setting “For each article in a feed, show” because it’s related with feed and it has nothing to do with blog.
You can try achieving this by using the child theme solution posted in the following topic.
https://colorlibsupport.com/t/full-blog-posts-on-posts-page/
Best Regards,
Movin