It sounds like your manager had particular expectations and failed to communicate those to you. I think you've done well to recognise that you felt like you wer

It sounds like your manager had particular expectations and failed to communicate those to you. I think you've done well to recognise that you felt like you were treated unfairly, but also to recognise valid feedback and things you could improve upon. I think it's a good idea to make it clear that you simply didn't know about those particular requirements, and that you would benefit from clear communication. I doubt that they're unhappy that they've hired you - you've done good work, and they can only expect so much from a junior. I'd keep at it - there's a good chance these are just some minor issues that will be ironed out as you continue to work together.