You realise how many different storylines there are in comics right? MCU is a universe that is designed to be based off but different to the comics (also true of DCMU [is this the correct abbreviation does it even have a name?] but we all know that’s going down the drain at the moment); but there are multiple universes within the comics of both companies as well, and there’s no feasible way you have read every comic to know whether all the information they bring up is either correct or incorrect.

https://fanlore.org/wiki/List_of_Marvel_Universes

https://en.m.wikipedia.org/wiki/Multiverse_(DC_Comics)

Just as an FYI on how many different versions there are in each. And there’s been plenty of retconning of information even in the main universes over the years that you could possibly have missed since some of it happens across different character (or group) comics.

It’s not nice that people were mean about it before when they love it all now, but there’s really no need for the blatant gate keeping of people who may just not have had access to comics like you (apparently) have done for your whole life. Especially if your complaint is “it’s nothing like the comics!” Because, well, the comics are nothing like the comics as well.