I just corrected the editing of your message because you had performatted your text by mistake visibly (I also added majusculs).

So as to answer you, in the American Gods world the whole idea is that gods are only necessary if you believe them to be. All is about belief.

If you believe a god to be the power that regulates life and death, then it will be the power that regulates life and death - for you.

Actually it is a bit more subtle because as we see the faith or worship of just one person is not enough to create a god (though it is able to sustain or maintain one in a lesser form) - however when it comes to communities or groups now their faith and worship can get big enough.

So technically a god of life or a god of death can disappear and it won't actually affect life or death itself. Because in the American Gods universe, the gods came after the universe - and the gods came after mankind. So technically life and death existed and flew long before gods were invented for them.

That's one of the big ideas of AG - gods are only necessary and needed if you believe them to be.

I understand for the gods of life but the gods of death there are some who are necessary as thanatos the soul-reapers or the gods of death who do not apply death but what happens after I speak of al-gods like hades, osiris yama, Ereshkigal, Izanami, Ah Puch, Arawn, Nergal, Mictlantecuhtli, etc.

You again wrote in perfomatted text. Please avoid doing so - else I'll have to correct all your messages

What exactly do you mean by "necessary"? Do you mean that one needs to exist in the AG universe? Also which version of AG are you referring to - the novel or the television series?

I'm talking about the series because we see several gods of death who take souls into the afterlife like anubis or the baron on Saturday or also themselves African gods in the episode in which bilquis and also I don't speak English or I don't do not write English I use a traductor on google then I copy paste

Oh I see then it is alright.

In the television series the topic of death is... quite complicated. Normally one would assume that the topic of death works mostly like in the novel - as in if you are not tied in a way or another to a specific death god living in America, then you probably just die without any god (again, the world can work perfectly fine without gods in the AG universe, it just so happens that people believe they should be here and so there are. Let's imagine someone who is not tied to the Egyptian gods, or who does not answer to the vodou or yoruba deities... Then when dying they would probably meet no god and just end up in the afterlife (or maybe the Nothingness described in the novel).

So technically they are not "necessary".

The television series however had its "lore death" screwed up in season 3 (I already mentionned season 3 is like a paradox that destroys much of the worldbuilding of AG). Because we see that there is a realm of "Purgatory" that exists apparently for souls not tied to specific gods - and this is a HUGE problem is the AG universe because Purgatory is actually a Christian belief (and an out-dated one at that), yet in the show it is treated as if it was a realm existing beyond the idea of belief and worship, and where people of all nationalities, religions and faith end up in... which again makes no sense.

So yeah, actually in the television series the idea of death in the god world is pretty much screwed up by season 3. Much simpler in the novel if you want my opinion