Where to start

Been a marvel fan since I was a kid (I’m 29) but never got into comics, but since marvel rivals came out I’ve been getting into the lore of some of the heros I’ve never heard of and wanted to get some of the cooler comics mostly to have as cool decoration for my office. Where should I start? Whose got the coolest cover art? What series is the best read for a new comic fan? Any suggestions are greatly appreciated!

Edit: some characters that I like: the avengers, fantastic four (Dr. Doom), moon knight, psylock, the X-men, spider man/venom, punisher