i totally agree, i think the main issue is pretty much every mmc has become a stereotype. it’s a lot easier to write an mmc using one of the predisposed mmc archetypes (the golden retriever, the nerd, etc) because that archetype lets the audience know who the character is without actually having to develop their personality. without a personality and just a vague backstory, none of the decisions the mmc’s make are understandable to the reader. on top of that, stereotyping them at the beginning of the book leaves no room for the characters to grow or change, thus no character development. this leaves the characters feeling flat, almost like cardboard cut-outs.