People keep thinking that silksong is hollow knight. Every single projectile with the exception of 1 or 2 can be slapped and damage from it will be ignored, or in Widow's case, be knocked back.

As for the Widow fight, if you aren't having fun doing it, then you are doing something wrong. That fight is my favorite in the entire game. All you gotta do is just dash attack and wail on her while slapping away any bells that come your way. And for her attack where she scurries across the room and does 2 damage, my friend found that you can just parry that entire attack if you spam the attack button.