Keep in mind, this will often mean shifting the focus of your business from more general to more specific products or services. For instance, instead of exclusively offering general home renovation services, you could consider specializing in "one day bathroom renos" or "custom kitchen makeovers." These more specific keyword phrases will likely be much easier to rank for, which will mean you can start ranking that much faster.
Meh, I disagree with your theory about using less tags. You should use all 500 characters for optimal results. There is no proof that likes/dislikes does anything to the SEO. I’m sure that is more for the content makers info and viewers warning. The description can be up to 5000 characters. Best to post your other video links. You have no proof of anything, noone does, we can only guess how youtube seo works..
But sometimes there are site-wide technical issues that get in your way of ranking on Google. Luckily, fixing technical issues is not a required step for every single piece of content you create. However, as you create more and more content you should be aware of duplicate content, broken links, or problems with crawling and indexing. These issues can set you back in search results.