Howdy, one tool I found very helpful and that helped me identify visitor friction is to integrate luckyorange. I've found and reduce friction just by watching recorded visits, desktop/mobile...
there is module on addon's...but if you search maybe there is a cheaper or free module.
but it's worth it...IMHO....my job is always how to improve a client shop...by watching why visitors leave, what the visit....how they navigate and see.....priceless.
of course there is google analytics abandonment....that's another story...loool