Having a youtube video is not enough because you need to be putting it in front of viewers for you to be able to get any kind of a benefit. If you do not know how to do that, then you will have to read about marketing with youtube online and you will know exactly what steps you are supposed to be taking to realize your goals.
You may have to buy youtube views which could be one of the factors that determine where your videos would rank for your keywords. If you do not add proper titles and descriptions to your videos, you will just be reducing its impact because half the people would not be able to find it at all.
There are many ways that you could go about getting youtube likes and one of the options would be to just buy them through an SMM panel. Although it is better to get real likes through natural means without putting in much effort from your end, it just does not seem to be practicable because you will find that buying youtube likes would be the easiest option available to you.
However, since you are hosting your videos on youtube and you do not own the platform, you will always be at their mercy. Try playing by their rules to avoid your videos from being removed. Make sure you make your video marketing efforts look extremely natural.