Organic is mostly about getting shares/saves now, not just views. Reels still pull reach but the accounts I see growing are making stuff people send in DMs, like quick checklists, controversial takes, before/after, mini case studies etc. Also optimise your name/bio/captions for IG search, people forget IG is basically a search engine now.
One thing that still works well is collab posts with same-size pages. Not influencer shoutouts, just proper collab content so it shows on both feeds. 2-3 of those a week can beat posting 5 random reels a day imo.