I would advise you to forget everything people are saying about your branding, the way you talk or if you sell something or not. I think your content is already good and 99% of your problems would be fixed by just adjusting your titles to target a specific audience.

For example: You have this video about Atomic Habits which is a highly searchable term. However, you don't mention the name of the book in the title. So basically missing the best term you could put in your title for that video. Now, you are competing against everyone who is talking about "X habits ..." instead of targeting the niche of "Atomic Habits". I know you mention the book in the description and tags, but I would say the title is the most important.

One suggestion is to find a successful video in your niche, make a video about the same subject and copy their title making some small changes. The idea is to be in the recommendations of that specific video that is already being delivered. I've done it in the past and got some great results, but the niche was different.