@dindazen You need the instagram developer account to create the API_KEY, once you created the API_KEY you will need the API_KEY to make your petitions, not your account credentials
@dindazen I'm not sure If I understand what you are asking for, but with the API you get the data from instagram's API (comments, likes...) without the need to connect a "normal" account to Instagram.
I’d focus on mixing quick wellness tips, behind-the-scenes moments, and simple client wins, then repeat what gets the most saves and shares. Clear captions with gentle calls to action work great.