How to promote [YOUTUBE VID] + subscriber.

How to promote YouTube videos or get new subscribers. I'm trying also some { smm} to get hr views but not able to rank it.
Anyone suggest me some YouTube strategy thread related to - :
1.rank videos
2. How to use tag of others ranked video without any copyright issues.

My channel already 2k subscribers but still freeze. Even not able to rank my video.

You can not get copyright restricted from using another videos tags.

If you’re worried about that just rearrange them.