Installation Broke Some Things

Hello. I installed Tutor LMS as a plugin on my ww.wp.xz.cn (v 6.8.1) blog site yesterday in order to test its capabilities. I purposely didn’t publish anything but I noticed that menus were automatically created which were easily removed, however, most of my pages and posts are no longer accessible on my site (www.abroaderperspective.es) or the WordPress admin page. The lists of All Pages and All Posts still reveal all the content, but the links to the database must have been broken because the content cannot be viewed or edited. I did check the MySQL database and can find posts in wp_posts but as I mentioned they are no longer linked to the admin pages or the site itself. I immediately deactivated and deleted the Tutor LMS plugin to see if it would restore the content but it did not. Finally, some customer CSS appears to be undone as well. My theme is Ashe Pro Premium. I would appreciate some guidance as soon as possible on what I can do to restore my site to what it was prior to the plugin installation. Thank you. 

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