Apple allows you to download the "last compatible version" of an app if it’s already in your account history.
While the App Store might tell you the app is "not compatible," there are still official ways to download an older, working version. instagram old version ios 12.5 7 download
Use the search bar to find Instagram in your list of previously downloaded apps. Apple allows you to download the "last compatible
Download Instagram on that newer device to link it to your account. non-bloated Instagram on your old iPhone
If you want a functional , fast , non-bloated Instagram on your old iPhone, tracking down this old version is worth the hassle. Just don't expect Reels or new stickers. For pure photo-sharing with friends, it's a 5-star experience. For creators, stay on modern Android/iOS.