No, however it is necessary that you cite the source if you copied it. Ensure that you provide the necessary copyright information in the description of the video.
To cite an APA YouTube video properly, follow this format: Author(s). (Year, Month Day). Title of video Video. YouTube. URL
It definitely could be if it is unwanted. If a source is from a YouTube video though, like from an interview, then it may be appropriate to cite the video as a reference.
To cite a YouTube video in APA format, include the following elements in this order: Author's last name, First initial. Username. (Year, Month Day). Title of video Video. YouTube. URL
To cite a YouTube video in APA format, include the following elements in this order: Author's last name, First initial. (Year, Month Day). Title of video Video. YouTube. URL
To cite a YouTube video in your research paper, follow this format: Author's Last Name, First Name. "Title of Video." YouTube, uploaded by Username, Date of Upload, URL.
I don't believe YouTube channels are something you can cite properly. For each video you've used, you should cite it in MLA.
See the information in the related link to cite youtube.
To cite a YouTube video in APA format, include the following elements in this order: Author's last name, First initial. Middle initial. (Year, Month Day). Title of video Video. YouTube. URL
No, it is not plagiarism if you properly cite the source of the information you are using.
To cite a YouTube video in APA format, include the following elements in this order: Author's last name, First initial. Middle initial. (Year, Month Day). Title of video Video. YouTube. URL
No, you do not have to cite the same source after every sentence. It is important to cite sources when using information or ideas that are not your own, but you can cite a source once if the information is consistent throughout your writing.