Earlier quoted context omitted.
You can publish to both and even better your own domain that simply points to your video hosting provider. Long term you want to own your distribution channel as much as possible, while using YouTube as your lead generation tool to drive true believers to your site and premium distribution channel not owned by YouTube. Otherwise, you will always be subject to platform risk via YouTube's whims which has destroyed many…
Alright, you're hosting on FreeTube (paying for hosting & bandwidth costs) - how are you making money? Most YouTubers don't want to run their own ad network or sell a physical product. Sponsors make deals conditional on YouTube engagement metrics.
Edit: Of course, you do need to have enough demand/scale to make it worth your while, but that will depend on your audience size and how engaged/invested they are in your content AND you personally to an extent. Perhaps be creative and start out with small experiments. Not too hard with LLMs nowadays.