TikTok Live brightness does not match my Monitor's brightness?

First time I've gone live on TikTok, and it went horrible.
During my stream on TikTok, playing MC with my friends, I can see completely fine during cave exploration, but later found out that my viewers couldn't see ANYTHING. Straight up staring at a void. I've tried adding a filter, bumping up the brightness, gamma, contrast, whatever. None worked or looked good. Perhaps I'm just dumb with the filter, but how do I fix this?