Instagram Business Page Basics
For Instagram your business name should be used for ease of finding your business and your handle (ie @businessnamehere) needs to be your business for ease of tagging/mentioning you.
Use up to the allowed 30 hashtags on Instagram.
Use a mix of popular common hashtags, mid range and those with less posts.
Hashtags are for Instagram not Facebook. Facebook now actually reduces your exposure if you use hashtags on Facebook. If you do use them only use one or two on Facebook.
Don’t link your Instagram account to Facebook and allow the auto post from Instagram to Facebook as this reduces post exposure plus just turns out spammy if there are tags in it as they don’t carry across to Facebook. You can use the same post but manually post it to Facebook that’s all.