These are just good insights! My goal is to actually have a talented team considering that I'm more of a "businessman" than a programmer.
About the psychological horror game, I have actually done some research and my culture has an interesting diversity of creatures and stories that could be very interesting in a horror game. I am not saying that I will add any creatures, but rather select those that best fit the theme. I will not include a pink dolphin that kidnaps women (yeah, we have something like that). Even from a more conservative point of view, Brazilians would certainly support the game. There are no games on the market that explore our culture and Brazilians tend to strongly support national projects.
Now regarding the zombie game... my goal is to create something more distant from the action or super humans who can kill zombies with their bare hands, no, I want to create a more immersive experience that provides freedom for the player to choose how they will obtain resources and food, like a choice system.
I grew up playing video games but to be honest I have a lot to learn, so it's interesting to receive constitutive feedback. If you have anything else in mind I would be grateful, I want to have a basis of what I'm doing.
Ps: (I know Resident Evil is a different niche than what I suggested, my English isn't the best ;))