I have to disagree with you for disagreeing to use single word tags. Use at most 5 keyword tags is what I've learned from learning social media video marketing. I have some of my videos ranked by single keywords. But make those 5 single keywords good. Don't put them to waste by making them a very competitive tag.i have to disagree single word tags are not gonna help, so tags like dead,by,daylight,or gameplay and gaming they will never help the video and just uses up space to where you can put something better phrases are should be the most thing people use and a lot of youtubers that are small don't realize this which can put you ahead of the running in the long run i agree with the rest of what you said just not the single word tags