*didn’t watch the shows that were originally on netflix (jessica jones, luke cage, agents of shield, etc., only watched shows starting with wandavision)
didn’t watch i am groot, what if, eyes of wakanda daredevil born again, marvel zombies, or wonder man
not because i avoided them, but because life got in the way

i did however watch agent carter, it was very good, i think i would put it right after the first avenger 

visionquest would be right before doomsday 

p.s. i hope this isn’t a spoiler but i would watch (at least) x-men the last stand and dark phoenix after brand new day just to get a sense of the new character’s powers 

I also didn’t watch the x-men cartoon reboot but i did watch like 3 episodes of the 90s original just to get a feel for the political landscape (i had the intention of finishing it and watching 97 but i didn’t have enough time so 3 episodes was enough background) i would put it wherever you like but maybe anytime between: before multiverse of madness and after brand new day

help:
marvelcinematicuniverse.fandom.com/ (where i look up the movie i just watched to make sure i understood the plot and characters, has a lot of spoilers)

https://www.thepopverse.com/movies-tv-marvel-in-order-mcu-cinematic-universe-studios-chronological-release