Article not showed anymore, why?

I discover some articles are no more listed in the category I set.
I set all article in section blog should be showed at https://www.marcoborla.it/blog/

Last post was created on June 2023 but there are a lot of post not showed: https://www.marcoborla.it/category/blog/

Seems is not showing all article in the category second page, why?

https://www.marcoborla.it/category/blog/page/2

All those articles are not showed at https://www.marcoborla.it/blog/

 

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