How to find a post on Instagram within the same account by a keyword from the description?

Question

Search engines

I have an Instagram account where I post a lot of information I need (3-5 posts every day). I want to periodically return to selective posts by a keyword, which must be included in the description of the post. Searching on Instagram itself is not suitable for this purpose.
Tell me what are the options, without resorting to specialized paid services?

Answer 1

Just take the sign

Answer 2

I'll rephrase the question. How to find the post I need by keyword on the page of a certain user in instagram? If your answer is the same, please explain what you mean.