Just a note regarding your tortious interference claim. Under current law YouTube is a platform and has section 230 immunity.
https://www.eff.org/issues/cda230
https://codes.findlaw.com/us/title-47-telecommunications/47-usc-sect-230.html
As long as this remains the state of the law your claim of tortious interference must fail, here is why.
As YouTube is a platform with sec 230 protection they own the entire platform, which includes your channel which is on YouTube. They do not own your CONTENT but they do legally own your channel since it is on their platform. They can censor or manipulate your channel in any way that sec 230 permits and will remain immune under the law. They may even outright delete your channel without notice or recourse and ban you from making a new channel. Your business or channel is currently not separate from YouTube on their platform, it is part of YouTube on their platform and they can do with your channel on YouTube, their platform, pretty much as they wish. Were you to remove your channel from YouTube they would have no power over you and they can only interfere with your channel on YouTube, not other platforms that they do not own.
To change this we need a change in the law. A court decision affirming first amendment access to the platform and protection for content would work but is currently VERY unlikely. The change will probably need to be a Constitutional amendment which will be a very long, difficult, expensive proposition VERY VERY unlikely to succeed as the entire establishment in politics, media, and business would oppose it and the public is quite split currently regarding the value of freedom of expression as some short-sighted people cheer for censorship they believe to benefit their side. Such an amendment does still remain the best option. I recommend you consult with an attorney previous to any filing you make as your case will be seen LEGALLY as without merit and will be dismissed on motion prior to trial. In short, currently there is no way for you to win such a civil action predicated on tortious interference. Good luck to you, and to us all.