The popularity of a video is measured in terms of the number of views. You can increase their number both for money and absolutely free. It all depends on your financial capabilities and availability of free time.
Repost
Share your video to social media. If you have a page with a large number of subscribers, then views will accumulate quickly. Ask friends to copy the video or share it from your page.
The easiest way to promote is through advertising. You can order contextual advertising from google or pay a famous blogger to advertise your channel. In the latter case, you just need to find a blogger who shoots videos like you and ask them to mention you. Some may agree to do this for free, but in most cases you will have to pay.
Advertising on third-party resources may not always be effective. For example, if you run a food channel, advertising on recipe sites is likely to bring you viewers. If you are talking about games, then it is better to find a popular group on a similar topic on a social network and place ads on them.
Optimization
Always optimize your videos. For example, if you are talking about motivation, name the video "how to motivate yourself", be sure to add this key to the description, and write words directly related to motivation in the tags.
You can also join the free Youtube fan finder. You only need to accept the agreement and Google will advertise your channel next to the videos of other users.
