How to stop dreaming?

I used to like dreams but in the last 6 months I always wake up feeling unsettled and sad. There’s no reoccurring theme or anything and I don’t usually remember them well.

Does anyone know ways to prevent this?
I do listen to YouTube as I sleep - usually reddit stories being read. I have always done this and if it is the cause it would only be recent.

Any help is appreciated ❤️