So keep it simple: Like what you like, comment on things that catch your eye, and save posts you want to see again. It's a win-win for everyone - the creator gets engagement and encouragement, Instagram shows you more similar content, and you have a good time on the interwebs.
You can get more insights into what's informing the algorithm's selections if you tap each recommended post, select the three-dot icon, and select 'Why you're seeing this post.' From here, you can adjust your usage patterns accordingly.
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