Tips for getting your YouTube channel and videos found by search engines:
1. Use metadata: Search engines will use your title, descriptive text, and keywords to rank your channel/videos.
2. Link to youtube.com/user/username, not youtube.com/username.
3. Create playlists that also have carefully chosen titles, keywords, and descriptions. These are searchable on search engines, too. The more links that point to your video, the better the SEO. Playlists are essentially links. It’s also an opportunity for your playlist to show up on the “related playlist” bar. And playlists are ranked highly in search engines, according to this article.