It can be tricky. I did it in Chrome and it affects Google searches only. You can't really turn it off, but what you can do is set the default results tab to "Web" rather than "All". This also suppresses the row of images, videos, the sidebar with shopping, etc. It just lists the websties old-school style. You can always switch to the Images or Video, etc. tabs too.
I used this CNET article to do it:
https://www.cnet.com/tech/services-...taking-over-google-search-how-to-turn-it-off/
It links to a seperate how-to on enabling Web results:
https://www.cnet.com/tech/services-...-1998-look-with-blue-links-using-these-steps/
It could vary for other browsers and search engines. Good luck!