Safari and it's Dark mode on websites
I have dark mode turned on in macOS. Thanks to this, Safari also uses Dark Mode. The problem, however, is that it also tries to display pages that look terrible or are not adapted to the dark mode at all. Example is the Google Page Speed. I attach screenshot. How do I use dark mode on my system but turn off dark mode for websites in Safari at the same time? There are also some bugs with UI in dark mode.
What is super strange, I had to make a photo of my screen as this glitch doesn't appear on screenshot.
MacBook Pro (2020 and later)