How to stop gifs, videos, and "rotating" ads in Safari

I visit many different news sites from a link aggregator and I'm finding it increasingly difficult to actually read the content on those sites because of the motion in the ads. These sites get covered with banners (a new one pops up elsewhere when you close the first one), or have running gifs, or video, or merely ads that display for 1-5 seconds and then change to another ad, creating distracting motion. It's very hard to finish reading a sentence when all of this motion is distracting the eyes.

Is there any way to shut all that (or any of that) down?

I have pop-up blocker enabled and I'm running Safari 13.0.5.