The main problem with Isekai Meikyuu no Saishinbu o Mezasou (English subtitle: Aim for the Deepest Level) is the protagonist. He’s pretty dumb, and despite having a special ability that makes him less dumb when that idiocy starts to threaten his existence… it never quite sticks. Just an incredibly unpleasant head to be stuck in.
Another series I can’t recommend picking up is Ansatsushadearu Ore no Status ga Yuusha yori mo Akiraka ni Tsuyoi nodaga. While the protagonist here isn’t intolerable, the work as a whole comes across like a half-baked Arifureta imitation. That wouldn’t even be so bad if it weren’t for the constant stream of incredibly arbitrary character and event developments that kicks off after he leaves the castle.
Maybe the author manages to discover the concept of cause & effect later, but this beginning is so atrocious I have no desire to find out.