What services and how to analyze correctly?

Question

Search Engine Optimization

There is a direction in which a person wants to sell a product through an online store. To do this, you need to analyze whether this product is needed.
Can you please tell me how to analyze? Analysis of search queries and so on?

Answer 1

Yes, see query popularity + trends.
But after all, there may not be demand, it can be created with your own product (if it is new).

Answer 2

www.bukvarix.com
+ Direct + Adwords
but this will not help answer the question