I looked at your tags and they are decent. I think where you're lacking the most is your descriptions. You have to craft your descriptions such that it contains as much of your researched tags, but at the same time you can't simply spam tags in it or Youtube will detect it. You should aim to have descriptions that contain 200-400 words. Don't put all your social media links on the top of your descriptions. Youtube's search engine reads from top to bottom so you have to put your most important sentences that contains your researched keywords on top. A good tip is to start off by copying and pasting your title on the first line of your description.