Could always just have a feedback button that when clicked takes the user to a google survey tab to get feedback, tis what my buddy did, he later expanded it to be all ingame so players would fill out survey ingame then send it and it'd be routed and filled out a google sheet survey.
Other option is to simply have it email you information but that can get clutter-y fast.
But yee, one other option that my friend was toying around with was sending google surveys when the gam is closed as a sorta pseudo analytics feedback, works pretty well since google doc can crunch similar results and answers so you dont have to search for every single response.