Okay real talk - if you're getting zero growth after 4 years, something fundamental is broken. Either your content quality isn't there, you're not consistent enough, you're on wrong platform, or you're not understanding algorithm.
Look at successful people in your niche. What are they doing that you're not? Are you copying formats or doing something original? YouTube cares about watch time and engagement, not just uploads.
Instagram cares about retention and shares. Different platforms, different rules. Maybe change direction entirely - try new format, new niche, new platform. 4 years is long but sometimes success takes luck + timing + quality combined. Honest question: are you actually good at this or just pushing for growth?