>>110013413This was two years before TWS, so HYDRA has time to realize Cap is not a part of them and they have Bucky gun him down when he’s least expecting it.
Wanda and Pietro are never experimented on by the scepter. Sam never becomes the Falcon. Scott Lang never joins the Avengers. AoU and Civil War never happen.
When Thanos attacks, the Avengers are still together but the team is only Iron Man, Thor, Hulk, Black Widow and Rhodey with help from Doctor Strange. The Wakandans mind their own business. Peter was never given a chance to meet any of the Avengers.