Add Database Functionality to a WP_List_Table

Hi I have the following functions.php where I’m trying to setup a $wp_list_table and add Database functionality. The table is going to be used for custom widgets section inside the WordPress backend – it currently adds a new menu page and renders a nicely organized table that has no functionality at all.

Does anyone have any ideas on the code that might help me get setup to make queries to the DB for editing and removing the linked titles in the first column of my table? In the end I’m wanting the user to go to a 2nd page, add a custom widget, and then re-direct back to the first page after updating option to see the newly-added widget. This has been a marathon to say the least!

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