I saw answers on excel to LaTex but do not want a latex table... Need to use LaTex in Excel to make .csv with math symbols, subs & supers, etc

I am trying to make a csv file for flashcards that includes latex symbols, the file needs to be in csv format and I was editing it in excel to change the plain text such as d/dx f(x) or x^2 a_n etc to the actual mathematical symbols, subscripts, superscripts, etc but using the built in symbols in excel takes forever... is there a better way for me to do this?