How to resolve the problem of YouTube loading, but not playing videos
Dude Changed status to publish February 9, 2022
First, try to lower the resolution of your YouTube video below 720p.
Second, Google Chrome will likely block autoplay on a lot of sites that have user account login or auth. Viewing videos in this case requires manually clicking play and not refreshing the page while viewing.
Thirdly, make sure you have an up-to-date browser.