If you were previously following the person who blocked you, check your following list to see if their profile is still listed. If they've unblocked you, their profile should reappear in your following list.
The most definitive way to check if you have been unblocked is by using the Instagram search function. When a user blocks you, their profile essentially becomes invisible to your account. how to tell if someone unblocked you on instagram
Unlike a platform like Twitter (X), Instagram when someone unblocks you. There is no “John Doe has unblocked you” alert. The only way to find out is through a process of elimination and digital detective work. If you were previously following the person who