What Damon is pointing out is that you have not made enough videos on your channel to define what your channel is about. Saying that you tried every strategy, seems a bit of a reach given the low volume of videos your channel has. I would argue even Damon, who has 100s of videos uploaded with 10k+ subs, has not tested every YT strategy out there. My advice is, first establish a strong foothold what your channel is about within your niche by trialing more videos. You don't need 1000s of videos but a solid foundation of 50-100 videos will help you understand how YT works.