Thanks Lisa!
I did try that it didn’t work,however, prior to checking out this forum, I went into my cpanel and deleted the security plugins that I use,I also use it to rename the login page, now I could login to the website thru the wp-admin login page ONLY via front end of my website, so what I mean is that, just like signing up to a website, I visit my website and it says create your account or sign in, when I sign in, it sees me as the admin, BUT the WP tabs, like the dashboard,plugins,theme,customize,etc… returns me to a page nt found whenever I click on it.
I could see all of the above tabs but the background color is just plain white and when I click on any of these tabs, I get, “Page cannot be found”. I’m looking at hundreds of hours and two months of work going down the drain because I simply forgot to turn on the automatic backup.