wordpress 404 errors

Someone put my site in fake backlinks which led to a very large 404 error on my site maybe 4 million error pages were disavowed and about 40 thousand pages remain showing in Google search which led to a decrease in visits to my website I want a solution to fix this problem please

Hello Everyone Did you get 404 errors on your WordPress site? No worries! In this guide, we'll show you how to fix them using a simple plugin This can make them leave your site quickly, hurting your search engine ranking. To fix this, you can create a custom 404 page, but for now, you can...