wordpress - Filter custom post types by absence of category

Question

Lets say, I have 3 taxonomies related to a custom post.

post1   ---->  cat1, cat2,cat3
post2   ---->  cat1, cat3

Now I can filter them based on categories, but what I want is. if I select cat2 It should filter and show me post2, as it does not contain this cat2.

Note: I am doing it in admin panel, not on front end.

question from:https://stackoverflow.com/questions/65848452/filter-custom-post-types-by-absence-of-category

Answer 1

Waitting for answers