The best and simple way to check whether you are blocked is to check either without an account or from another account.
If you have an alternate account, you can look up the person who has blocked you, if you are able to see their profile and everything looks the same or the person has even updated their content, then that rather unfortunately means that they have blocked you on Instagram.
Regardless of why they blocked you, you will know you have been blocked if you are unable to find out their profile while looking through your default account if they have blocked it but are able to see the same account by using an alternate Instagram profile. The most straightforward way is to check from another account.
If you have been able to find out that you have definitely been blocked on Instagram by a certain person.
It can be a good chance for you to meditate on why exactly you were blocked and whether the person who blocked you were put off by your behavior in the past.
It can be a rather embarrassing situation to face since being blocked means that it was your own fault one way or the way, you might have insulted them, you might have acted inappropriately to them or offended them with a post of yours.
Regardless of the reason, it is important to keep a good profile in the long run for both your casual and professional needs.
Now that you have find out about how to know if someone blocked you Instagram, will you reflect on why you had to look this up in the first place?