Okay, can someone explain me some shadowban things ?

I have multiple IG accounts for all my brands.
On my photography account (my very own photography work), whenever I post, it show up on some hashtags but not on all of them.
I verified everywhere and these aren't shadowbanned hashtags.
My account has 2Ksomething followers, never bought any, my engangement is rather high etc.

What's the explanation ?

They don't appear in some tags since instagrams tends to filter the posts, basically if they notice stuff that is inappropriate and shouldn't be shown, they hide it from certain hashtags (even though nothing might be wrong with the post). Had it happen to me as well and that was the case.

You might be using the same set of hashtags too often. Example if you always use #photogrophy #photo, #picoftheday, try switching it to #myphotos #localphotographer etc.