Should I replace the glass, the digitalizer, or the whole phone?

I cracked the glass on my S8 edge forever ago…it was pretty bad but it was tolerable I could still see everything…it got dropped or fell a few more time, the last time this happend it got a much deeper crack and the screen doesnt work. 75% of the screen is white and I can't see anything for the most part however the screen still responds to my touch. The phone still totally works when I touch the screen, it can still run whatever program I open but I can't see anything. I went to my local repair shop and it was going to be much more expensive than I thought. I'm not sure if I should replace the glass or the whole setup….any advice?