I'm not sure how far you are in the game but there is a charm (exploration equipment) you can make via alchemy that helps with that a lot. Keep in mind that when you raise that level to max (5 orbs), monsters get much stronger. They grow stronger with every lit orb in fact.
That charm 's effect is called seal of chaos, or something like that, the word chaos is in there for sure.
Also I just thought that I probably should explain material ranks better. There are ranks e, d, c, b, a and S. Where E is a bad material and A is good, but S is super good. You don't have access to S materials at the start of a game though. You probably will get your fist by killing some boss, much later in game you can get them from regular powerful monsters too.