Not only does this tactic not work anymore, but it can also cause Instagram to flag your account. If you have been using this tactic, then it's possible that Instagram's detection tools have shadowbanned your account. You should also avoid using unnecessary hashtags in your captions.
Why are Instagram hashtags not working?
When Instagram Hashtags not working, users are very affected by it. Instagram Hashtags Not Working Solution is very easy to fix it. This problem is typically caused by a user error. It may be due to improper hashtag use or illegal use.
Do hashtags still work on Instagram?
Or as Instagram says: Keep in mind that if you add a hashtag to a photo after it was posted, the photo will still appear on the hashtag page according to the time it was originally posted, not the time the hashtag was added. The short answer is yes, you can add hashtags to your own posts after posting.
How do I use hashtags on Instagram?
Take or upload a photo or video.
Choose to add a filter, then tap Next.
Tap Write a caption and type # followed by text or emoji (example: #flower).
If you want to add a hashtag to a post you've already uploaded, edit the caption or include your hashtag in a comment on your photo.