YouTube tags are optional metadata that can help with misspellings and topic context, but they are not a substitute for an accurate title, description, thumbnail, and satisfying video.
How to choose tags
Use the main topic, exact names, common variants, and genuine misspellings. Keep tags relevant to the actual video and avoid unrelated trending terms.
What matters more
YouTube can understand titles, descriptions, captions, audio, and viewer behavior. Clear packaging and strong retention generally matter more than filling the tag limit.
Limitations
No tag set guarantees ranking or views. Search and recommendation performance depends on relevance, competition, audience response, and platform systems that change over time.