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You can promote your Instagram acc with help of special services, but you should choose this service carefully. There are a lot of bad tools for Instagram which can lead you account to ban (because of their artificial behavior). So, I use Ingramer ( https://ingramer.com/blog/Messages-Instagram-on-Computer/ )this service based on special algorithms that imitates human behavior. And during my almost 5 month usage I have not faced with any problem.