[Help]Any advices for instagram?

I want to build up "authority" Instagram account-s. Something that i could consider an asset.
I was thinking about making few main and few sub accounts, so i can push main ones with subs.
I would love to hear some advices on this , preferably from someone who is/was active on instagram, but any advice will help.

If choosing the authority niche path, broad searches tend to have more long term value.

Although harder to build up in the beginning, there seems to be increased revenue midway-completed growth. New era niches lead to dot com millions.

Don't make sub accounts that point to your main - they'll get banned, I'd focus on your main and make it grow with quality content.