[NSFW] robot

It doesn’t happen for me, but if you think you’ve been hacked, I recommend installing the plugin WordFence and scanning your site.

If hacked, get a fresh cup of coffee, take a deep breath and carefully follow this guide. When you’re done, you may want to implement some (if not all) of the recommended security measures

https://www.ads-software.com/support/article/faq-my-site-was-hacked/

https://www.ads-software.com/support/article/hardening-wordpress/

If you’re unable to clean your site(s) successfully, there are reputable organizations that can clean your sites for you. Sucuri and Wordfence are a couple.