The 10 Best Ways to Grow Your YouTube Channel
1. Create videos based on a single keyword or topic
2. Reuse existing content that is performing well
3. Communicate with Your Audience
4. Build your brand
5. Use other social media channels to promote your YouTube videos
6. Be a leader and stand out
7. Use YouTube Cards and post amazing thumbnails
8. Encourage subscribing
9. Increase the frequency of your uploads
10. Become an expert in a social video (and YouTube)
And another thing is,
publish your content regularly