I watched Loki and the latest Ant-Man and GoG3 and I think the Shield TV show up to the end but I haven't had time or desire to watch the Bucky and Birdguy series or whatever else there is. If the Avengers are out of the game, is it covered in some show? Or did that happen after Endgame and just didn't get much coverage? Ant-Man seemed to imply they are still around but covering other stuff or whatever. They really need to get their writers to think about how to have a movie with some impact without immediately going to 'end of the world/universe but the Avengers are too busy' stakes.
The Avengers "disassembled" because the massive threat to the universe-Thanos-is gone. Now the members have gone on their own adventures, ready to reassemble whenever another unique threat (Kang the Conqueror) appears.
If I remember correctly:
Thor left Earth to fight Gorr the God Killer. That was a threat to brings deemed gods, but not to the universe as a whole.
Guardians of the Galaxy are running Knowhere, and in the recent movie they split up as well.
Captain Steve Rogers retired, and the former Falcon is the new Captain America.
Hawkeye is semi-retired, and Kate Bishop is taking his place. She hasn't met the other Avengers yet.