Instagram Account Recovery Expert Needed

I need help recovering an old Instagram account. I don't remember the username, but it's quite important to me.

The challenge here is that:
- I do not have an email linked to the account
- I don't have any phone number associated with it
- I didn't link it to Facebook either

You can't rely on the conventional password reset options. I'm looking for an expert who can assist me in recovering this account, even with limited information.

Skills:
- Extensive experience in Instagram account recovery
- Proficient in social media account security protocols
- Excellent problem-solving skills and attention to detail