I have a MacBook Pro (Retina, 13-inch, Late 2013) and it seems not compatible with most websites anymore. What do I do to fix this??

Hi there, I have a MacBook Pro (Retina, 13-inch, Late 2013) and it seems not compatible with most websites anymore. all my browsers have been updated to their latest versions and I tried fixing this several ways, but no success. If I go the advanced way (as shown in the screenshot) the websites also don't fully show.

How do I make this work? What do I do to fix this?

It does work on newer laptops just fine. Only on my old devices is this error showing.

Thanks for helping out guys!