YouTube Autoplay weird videos

For over a month, the videos that play after the video I initially pick, are usually related to space, or less likely, a random video game Livestream from someone I've never heard of with really low sub counts. I don't watch either of these things. I usually let YouTube play while I fall asleep, and I keep waking up to very loud space videos. Twice I've gone through my history and deleted ALL videos that aren't related to my likes and I still get suggested videos about space. Sometimes I'll click a new video, hover over the 'Next' button, and sure enough, space. I have to scroll quite a ways down to even find that video on my sidebar suggestions. And it's the only one. Every other recommendation is/are videos I like. Please please please for the love of God someone fix this or tell me how to fix this.