I don't know how anyone still uses Instagram. It was an amazing app pre-aquisition, and Facebook managed to completely destroy everything that was good about it
You may believe that, and I'm sure it's true to a certain degree, but Instagram has seen absurd growth since the Facebook acquisition. Without Instagram, Facebook would likely be in a crisis right now over its aging userbase and decelerating growth. The Instagram app is probably nearly as valuable as the Facebook app at this point.
I'm not arguing that it isn't successful, but Facebook still managed to modify it the point that it lost 100% of its usefulness to me.
It was at its best when you could follow accounts, all of the posts of the people you follow would be displayed chronologically, and clicking on a hashtag would also display all posts under that tag chronologically.
Facebook removed the chronological order of the timeline, made it so you will not see all posts from the people you follow, started injecting posts and ads from accounts I do not follow, and did the same with hashtags where you will only see posts facebook decides you should see via their algorithm. Also, engagement with my page decreased 100-500% across the board and my consistent growth stopped entirely as I was not an "influencer" so people that followed me and checked my hashtags would rarely even see my posts
Facebook changed Instagram from an extremely functional social app that allowed you to easily interact with and become parts of niche communities, to a useless ad platform that limits your interactivity and connectivity to anything that you actually want to see to push you to whoever pays Facebook or whatever the algorithm decides what should be popular which ends up being the same garbage content that has plagued Facebook for years
