keywords in the right place - confused

I have a website in Joomla with reviews of different products (CB)
It has 5 different menus. + Homepage that shows the best reviews (featured)
Within each menu has categories with articles.


Site Meta Keywords: What should I use here? Only related to the main website?


Menu Meta Keywords - keywords with the name of the menu? or more?


Category Meta Keywords - keywords related to the website, menu, category, articles?


Article Meta Keywords - keywords only related to the article? Or also add the keywords related to the site, menu and category?


I'm pretty confused on what should be the correct structure to put the keywords in the right place.


Sorry for the confusion ... (G translator)


Any help you can give I appreciate