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I use https://chrome.google.com/webstore/detail/disable-html5-auto.... It mostly works - a few videos fail to play when I click, and a very few others manage to autoplay.

If there are sites you often visit you can see if there exist a userscript for those sites that may have that feature.

You can also block videos completely with an adblocker.

Write your own browser

Firefox has a setting for disabling autoplay, even for gifs