I'm not necessarily new to youtube, I have somewhere around 200 videos on my channel but barely any subs. I'm looking to change the way I record and edit, along with changing the type of content I make. I've noticed that I have no trouble being real and informal in front of the camera, but I have no idea how to NOT be informal. I want to go from lighthearted art content to something more like a video essay style and I'm having trouble with my tone. I seem to always go into informal, sarcasm. I find a lot of info on how to talk more confidently, or changing tone by imagining the viewer sitting there with me, but since I never have to talk in an informative way I have no idea how to start.
Sorry if this is a weird question, I don't know if I can explain it any better. Any ideas that aren't going to acting classes?