'To' is not correct here.

In addition to the preposition being wrong, the sentence is awkward and unclear. Maybe you mean: I share the plots with my friends, and also give them my opinions of them. More concisely and less ambiguously you could say I share the plots, and my opinions of them, with my friends.

With prepositions, it's best to just use the same ones you hear natives use. It would sound strange to a native speaker if you use "to" with "share."

Traditionally we don't share something "to" someone. We share "with" someone. However, in the modern era of social media, "share" has acquired a new meaning. It now means clicking on a button that causes a post to be shared with others. If you decide to share something by posting it on a social platform like FB, it would be appropriate to say that you are "sharing it to FB". In fact, it would sound weird to say you were "sharing it with FB".