Google Search Console is a valuable free tool for SEO.
The data provided by Google Search Console is definitely useful for understanding your SEO position and making relevant decisions about the next steps to improve SEO.
However the limitations of Google Search Console data and its reliability should be carefully understood before making any decisions based on that data.
This article on MOZ is very useful in understanding Google Search Console data reliability.
You should also read the following comments in the above article :
sub001’s comment
https://moz.com/blog/google-search-console-webmaster-tools-reliability#comment-417822
David Butler’s comment
https://moz.com/blog/google-search-console-webmaster-tools-reliability#comment-417678
and Russ’s reply
https://moz.com/blog/google-search-console-webmaster-tools-reliability#comment-417710