Shadowban for no reason?

I just did a shadowban test because my engagement dropped by 3 times atleast on views and 9/10 of my last posts were shadow banned on the hashtags... I have grown the account organically and not botted or anything what could be the problem?

Edit: I use different sets of hashtags each post. The one post that wasnt shadowbanned had completely unique hashtags . What does this mean?

You can't solve this problem. Because you have 1000 reasons why this happened.

Is your IG political? They're shadow banning some political instagrams lately.

It is really hard to say why exactly you are shadowbanned
But as you noticed, seems like it is something about hashtags

see the hashtags, visit them, if hashtag recent posts are limited then thats the reason why
im suffering the same with 2 accounts of mine, i removed all posts with such hashtags and hope the reach will come back