I have joined a new company recently and I'm worried.
Really have worry because of my people skills and little doubt on the manager. I mean what do I know I just joined but still overthinking it.

There are people who speak confidently and I feel intimidated because in the casual conversations I don't feel like I can contribute at this point at least, it's been a week only. Other thing is as I do not know much about the work, I can't speak in the meetings. I know that I'm expecting a lot from myself here as I just joined but I have a history of being silent in the meetings and in my previous organisation I could deal with it as I got comfortable finally.
How can I be more interactive with people, given that some are cold?

About my manager, he is young. He definitely has a good IQ that's why he is a manager now.
The thing is, he talks a lot. Conversations are not 2 way, and he kept on saying things without even understanding that I'm overwhelmed. I have previously told him that I am overwhelmed, he listened, took 2 minutes and continued with his all work related talks.

I don't like the way he's stating his expectations from the time I didn't even join. He told me everything about the organization, on first day, he gave me a 2 months rough expectations of me. I don't agree with all the points he makes but it doesn't seem plausible for me to interrupt and say my thing. For example when he stated his expectations, I should have stopped him and politely tell that it's too soon we can discuss these things in upcoming weeks. But just because he continues rambling, I can't say it. It seems a small thing but I know it's not proper conversation and will create issues for me. As I have had similar kind of manager before, who used to ramble and didn't stop talking. But couldn't understand my problems etc.