Are you seeing links like the ones below in your Google index?

If this is the case your site has been hacked, most likely via your web hosting, the fix is below:

1. Begin to move hosting, purchase new hosting and start to plan what can be moved
2. Do NOT try to repair a hacked WP site on the hosting it was hacked on, it will only begin a timer for the same thing to happen again
3. Gain Access to GSC or Google Search Console and review all links indexed there
4. Begin to make a list of the bad links
5. Use the GSC removal tool as you are moving hosting
6. Once you have moved hosting review and repeat the removal process as much as needed

How to Avoid This Hack?

If you need help building sites and choosing hosts that wont get you hacked please let me know.

Managed hosting setup for WordPress is the key to hassle free web site management. With the hacks I see 99% of the time it is not WP it is the PHP and or host not patching issues.

This is a site I am taking over from Blacknight hosting, I have seen this kind of hack on their servers 20+ times over the years.