Duplicate, Google chose different canonical than user

[abdulrahmankz]

google choose a url with category to be canonical

i removed the category from website

try to validate the issue but not works and still count it as GSC error

[not2easy]

Do you use a sitemap? Does your sitemap include category pages?

[abdulrahmankz]

yes i use sitemap for posts only, no, not included

[not2easy]

Do your posts have a canonical specified? If not, Google may choose one for the post.

[abdulrahmankz]

not specified, only yoast do
sould i implement self-referencing canonical tag ?

[not2easy]

OK, so it is a WP site. Yoast can automate that, yes.