Your conversion rate is brutal - hundreds of views for a single download means something's fundamentally broken in your funnel. Those TikTok slideshows are just content noise now, people scroll past without acting, especially when you hit them with a random app pitch at the end.
The real issue is you're selling a solution before people realise they have a problem. Nobody wakes up thinking "man, I really need to publicly share my habit progress." You need to find people already struggling with habit consistency and show them how social accountability actually works in practice.
ditch the slideshow format. Do actual videos of people using the app, showing real results. Film someone's 30-day transformation, or document how sharing progress kept them motivated when they wanted to quit. Make the social aspect feel natural instead of forced.
Also, your positioning sounds confused - is it social media or habit tracking? Pick one primary value prop and lead with that. Most successful habit apps either go full accountability/community or full personal analytics. mixing both just muddles the message