[throw172643]

I had a similar experience. I had a great manager on a very insulated, experimental team working fast and delivering results. Our Program Manager changed teams, soon our Product Manager changed teams, and we got merged into another team with new managers. I was told by my old managers I was on track to promotion and found out at the end of that cycle that I had a negative performance review and it was going to be even longer. I was delivering during this, but so was the whole team.

I swapped teams hoping that a new manager for an old colleague's team would be better and things didn't really improve. I stayed for a year before quitting due to my mental health. I think it can be hard to find the right team at a big tech company and even if you do, there's no guarantee of how long it will stay that way.