No, you dont need. usually crwaler read
Title (heading ) tags
Img alt tag
in anchor "rel" tag
Google crwaler reads complete page not just meta tag and descripton.
It also depends how many interlink your blog posts are and how many outbound link you have.
Google always consider authority to those blog posts which looks natural and support community. Try to engage with other blogs as well which are related to yours niche.
dont put all, just fit things/tags/keywords where they are needed.
I hope this will help you :)