A friend of mine last week had their Instagram "hacked" and the "hacker" was able to modify their email and phone number so now they have no way to even attempt recovery. There of course is no way to contact any human at Instagram. The account is now spamming crypto related spam to all followers. It would be immediately obvious to any human that this account was compromised.
Most interesting is that the Instagram help docs are not even accurate when followed. One specific example is that they mention in part "If you don’t receive a security code, tap I can’t access this email or phone number below Send Security Code, then follow the on-screen instructions." It turns out there is no text or mention of "I can't access this email or phone number" at all that shows up. The docs are just plain wrong.