Common sense advice here, but I see mistakes like using the same hashtags over and over and over (or using hashtags that have nothing to do with a post) way too often (particularly from nonprofits)…
As for the practice of using the same long list of hashtags on every post… Don’t do it. Instagram’s community guidelines clearly state that “posting repetitive comments or content” is not okay.
When you create a post, only use hashtags that make sense. If you tag a post with #wanderlust, for example, your content must be something globetrotters will want to comment on, like, and share.
— Read on blog.hootsuite.com/instagram-hashtags/