Nothing has exactly the same experience as MS. I don’t think there is a clone project for it.
The two you listed are your best options.
Does LibreOffice have any issues that prevent you using it? If not, it’s probably that your expectations are set by your comfort and familiarity with Office and that is the problem you need to solve.
Are the problem with the people who watch the video, or the people who create, or host the videos?