Great video content showcasing guitar playing. Good use of hashtags. Good use of questions to encourage more followers to comment. Posting daily in newsfeed. No stories at the time of health check.
Consider posting more stories. Aim for 6-10 per day documenting your daily routine etc. This will help to show your followers more about you behind the scenes. Use the “Swipe Up” feature in stories on occasion to promote your lessons. Keep using hashtags, you’re doing great here already.
Consider a possible competition/giveaway with one of your sponsors to get your profile to a wider audience. We can talk more about this.