403 forbidden error

either your file permission or .htaccess is broken

try debugging : https://www.ads-software.com/support/article/debugging-in-wordpress/

I have checked for all the files and folders, looks correct.

I have deleted the .htaccess and tried to access Pages, getting same error.

403 forbidden.

Please let me know, if you need more information for resolving this issue.

try disabling all plugins and change the theme to default , if it doesn’t work then try to enable to debug mode