I have found a way to counter this.
BEHOLD: the ever more needed yet way more infamous "Shoot, retreat, charge shoot" combo It ain't fun, it ain't that efficient, but its a gritty way forward, perfect for a game where you wanted to relax and enjoy it, and defnitely didn't want to grind your way to the level FC8 where you still can not one shot everything in your path (the hex value is part of the joke)
How to do it : Get shotgun, easiest way is to use unfucked version of the game (build 20 and less) get it and save in the main area. The rest is self explanatory, charge, shoot, retreat a little, repeat forever.
Congratz, you have now killed your first mob, welcome to the Dark Souls 6: where we kill you AND fuck you.