Instagram backup account

Hi guys, I'm planning to create a backup account of my private ig profile, why? Hard to explain, just know that I have 400 followers on my personal with a reach of 25% so it's healthy.

If i create a backup, with the same photos and no common followers, do I risk to be banned as a fake account in your opinion?
Consider that I use the same phone for both of them

It will not be a backup, it will be a dupe.

Not sure duplicating your profile is the way to secure it, the whole point is the existing following.

For example you can copy a page with million follower right now, in a few minutes, but that will most likely will not get you anywhere.

No I do it mainly for privacy reasons, dont need to secure it.

I just have the doubt if with duplicating I risk to be banned

no, you will not be banned, there is no reason.