As the title says, I'm writting my thesis and I am looking through many reviews, since they easily collect all the useful information that is general and it would take me too much time to find by my own. They also have a nice structure and "storyline", which makes it easier to read (and I doubt I could improve, despite connecting the different fields that are relevant to me).
My question is, if I follow the structure of a review, many of their citations, but I don't copy their sentences (I reformulate most of them when possible, skip some and add some extra from other reviews), is it considered plagiarism? Should I cite the review(s)? And how? Should I forget about all I've done and start from scratch?