Extract text between double quotes in R

I have a cell with the text ["bestsellers", "mysteries_thrillers_true_crime", "science_fiction_fantasy", "literary_fiction"]

Desired result - all types in a cell:

    [1]"bestsellers"
    [2]"mysteries_thrillers_true_crime" 
    [3]"science_fiction_fantasy"
    [4]"literary_fiction"

      

        
        
        
      

    

To extract the text between double quotes, I tried

str_extract(data$preferences[1], "\\[\".*?\"\\]")

      

        
        
        
      

    

and

str_extract(data$preferences[1], "\".*?\"")

      

        
        
        
      

    

both got the result:

 [1] "[\"bestsellers\",\"mysteries_thrillers_true_crime\",\"science_fiction_fantasy\",\"literary_fiction\"]

      

        
        
        
      

    

My question is: how to get rid of [and] and get the result of desire?