I need some advice. Earlier this year my employer transferred me from a long term assignment at the request of the client. This was after I had been unanimously selected to take on this role by the client board of directors just six month earlier. I was told that the board of directors of the client organization voted to remove me, but I have a feeling it was the President of that board, with whom I worked closely, who drove the final decision. She is known for her mercurial temperament (I am being polite here). Without going into details, I have a solid reputation in my field, and for over 2 decades have prided myself on being able to work productively with all kinds of clients.
A few months later my employer laid me off due to COVID. So, I am no longer with any of my former bosses or colleagues to make an effort to find out what really happened and whether I did something egregiously wrong to anger the client (my former employer stood behind me, but it was either take me off the project or lose client goodwill).
I have all kinds of self doubt now. Should I just let this go, and move on? Or is there something to be gained by trying to learn if I made some fatal error?