u/Short_Brick_1960

We see in Endgame that the Avengers travel to the past in order to get all six infinity stones. Hulk explains that their timeline wouldn't be affected because you can't change the past to change your future because that future is already your past. In other words, they would create other timelines

There are three different teams that went back in time:

First, we have Tony, Hulk, Scott and Steve who went to 2012 to get the Time, Space and Mind Stone. There, Hulk explains that if they returned the stones to the exact moment in time when they stole them, the timeline wouldn't desintegrate, but could continue living.

Then we have Thor and Rocket who went to 2013 to get the Reality Stone

And lastly, Nebula, Rhodey, Natasha and Clint who went to 2014 to get the Soul and Power Stones.

That I understand. But it's what happens after the Time Heist what confuses me. Hulk explains that they will return the stones after using them, and Steve indeed went to do that

But we see the 2012 timeline being pruned after Loki escaped with the Space Stone. Does that mean that Steve could no longer return the Mind and Time Stones? Because after being pruned, that timeline dies and it can't be revived. Or would they somehow rewind it a bit so Steve could return the stones and then prune it again after Steve is gone? Because that 2012 timeline's Steve now knows Bucky is alive and well. Which goes against what we see in CA:TWS, aka, the Scared Timeline

And Thanos 2014 dies in the Sacred Timeline by 2018. So that timeline, after getting the Power and Soul Stones back, wouldn't have a Thanos and the events of IW and Endgame wouldn't happen. So did the TVA prune the timeline after Steve returned the stones?

Steve being able to live with Peggy in an alternate timeline could be explained by the TVA having trouble with the Loki variants. But in the rest of the timelines, like in the one where Loki is a woman, would they have let that happen?

I think that they didn't plan the Loki show very well. Don't get me wrong, it's a really good show. But it raises a lot of questions that haven't been answered

Edit: I think that this could be resolved pretty easily. Prior to the events of Loki, the TVA waited for Steve to return the stones to prune all those timelines. But during and after the events, Steve would try to return the stones but couldn't go to the 2012 timeline because it no longer exists. He would return the others and the TVA would appear shortly after to prune them. But with 2012, maybe Steve got lost in time for a bit, ended up in the TVA hq, left the two stones there and went to live with Peggy right after the TVA stopped pruning timelines. But without this explanation, the whole thing is pretty messed up. Many people in the comments already have many explanations as to what could have happened