Can you have too many tags on YouTube?

Don’t add too many tags to a single video – the more tags you add to the video, the less relevant they become for users who are searching. Default tagging – you can create default tags for all your videos. The defined tags will be assigned to all the uploads.

For More Information Please Refer: https://blog.viralstat.com/how-to-effectively-tags-and-hashtags-on-youtube/