Hacked Wordpress how to get rid of the redirect virus?

Question

Malware

Hello, the problem is the following. About a week ago, the news came out that many Wordpress sites were broken and redirected to spam sites. The culprit was allegedly the Yuzo Related Posts plugin. My situation is exactly the same, only this plugin was not there and I did not install it before either. At the same time, 2 client sites were broken. After I handed over the sites, no information was changed on them and no changes were made in the last month. Therefore, it makes no sense to restore from a backup, as I understand it.
I've been fighting for 3 days now. Changed all passwords, updated plugins, scanned with several antiviruses, installed plugins with antiviruses, nothing works. Everything is also in phpmyadmin in the wp_options database, the site and home values ​​are changed to advertising ones. I see a ban on changing rows in the database as the only solution to the problem, but how to do it? And what other options would you recommend?