Hey, so I tried to play it via WebGL on Chrome/Firefox and it didn't work, and an error popped up. I've had this error in the past, and it's usually due to how Unity does compression for WebGL. You'll want to Disabled as the compression format, and can follow this link to see how to fix it :)
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https://forum.unity.com/threads/webgl-build-doesnt-load-in-browser.948400/