I know there's a workplace forum, but I think I can get better answers here.
I work on projects. I always have the main boss (let's call them A), who remains the same over time, but the project manager (B) on my project is always my temporary boss. B gives his evaluation of my performance on the project to A.
My first project at the company was a disaster and I'm not completely sure what I could have done better. The problem was, B excluded me from important communication. I didn't receive important information and was dealt with in a very harsh way, which made my role very difficult, even impossible. It was no fun either.
addressing the problem directly with B. I tried several technics to convince them I need to be included, I would like to contribute more, etc. But it didn't work out. I tried being nice. I tried pressuring them. Nothing worked.
talking to A and explaining the problem. They said they understood but told me to "make an effort" - I tried asking what it means, but didn't get any additional info.
I need to discuss my "performance" on the project with A now and I'm really uneasy about it. I love delivering results and the project... It was a disaster. I'm super tired of struggling for every piece of information. And I know I didn't contribute how much I would love to have contributed.
I don't want to blame anybody. Also I'm afraid I will come across as defensive and searching for excuses.
What the best way to tackle that?