I see most posting their content both at Rumble and Patreon. I did find this article which might be useful https://www.lemonlight.com/blog/20-places-to-post-your-video-for-maximum-reach/ 
Begin creating an email list so you can email your content. Have a simple opt in page that offers a free gift PDF (or the like) for adding their name.
No one can take away an email list of subscribers.
Host the videos on your own site using your own domain as well as duplicate posting on public platforms. Send the link to self hosted/posted videos in the emails you send to subscribers that have added themselves to your email list.