If you visit the actual Category Archive pages then you will see the correct posts:
https://butterjoykitchen.com/category/traditional-snack/
https://butterjoykitchen.com/category/baking/
The pages you’re viewing eg.
https://butterjoykitchen.com/traditional-snack/
Are Static Pages that are display a core Query Loop block.
If you want to continue using those static pages, then you need to:
1. edit the page
2. select the Query Loop block
3. in the Block settings > Filters – select the relevant category for that page.
Alternatively don’t use the Static Pages, and just create menu links to those archive pages i shared above.