I use paid ads on instagram. Besides that, you need a consistent posting plan. Posting reels regularly usually gives me much better results. I think the main thing is consistency. Test different openings, topics, and video styles, then keep using the ones that get more views, saves, and shares. It also helps to reply to comments and make content for a specific audience instead of trying to reach everyone. There is no single trick that suddenly brings followers, it is usually a mix of regular posting, testing, and paid promotion.