Overloading your youtube video with too many tags can lead to confusion and frustration for both viewers and Youtube’s algorithm.
Including trending tags in your video's description can help to increase its visibility and reach a wider audience.
A mix of specific and broad tags can help to ensure that your video is discovered by the right audience. Specific tags can target viewers searching for very specific topics.
Including synonyms for your main tags can help to capture a wider range of viewers who might be searching for similar content.
Researching your competitors and analyzing the tags they use can help you identify relevant tags for your own videos.