After importing wp_users and wp_usermeta table, admin users have no permissions

That sounds as if you’ve introduced a database issue.
https://www.ads-software.com/support/topic/sudden-you-do-not-have-sufficient-permissions-to-access-this-page-error?replies=29

Did you backup the database before importing the tables?

Yeah, that was the problem!
I didn’t know that I have to change table prefix in usermeta table fields.

Here is a solution https://beconfused.com/2007/how-to-solve-you-do-not-have-sufficient-permissions-to-access-this-page-in-wordpress/

Thanks again, esmi! ??