Best of the Village
Senior Associate at PwC
I have met many different managers during my career so far, and when I think about describing a manager, I think about the two big jobs of a manager. The first is managing what ever part of the business they are supposed to manage (the work, the project, or the product), making sure it is successful and achieves the desired goals and result. You already listed good skills to have from that perspective, including looking at the big picture, being about to spot potential risks proactively, and being highly organized. A good manager needs to be able to communicate both to their team and up to leadership and to sometimes have hard conversations. They need to be able to admit when something is going wrong, but be able to communicate how it will be fixed. There is a brutal juggling game a manager has to participate in, balancing the company's goals, their boss's goals, their team's goals, and their own goals, because most times, all those goals aren't the same. The manager's job is to make them all align and keep everyone happy. Sometimes managers do need to present in front of a large group. No one honestly is not a little nervous before presenting, but it is one of those skills that you can practice. I suggest getting someone you trust and practice presenting to them. Present on something you know well and ask for advice on how to do better. There are a number of resources online about presenting with tips and tricks you can use.
The second big job of a manager is to manage their people. All the managers I have liked always genuinely cared about me as a professional and as a person. They would remember my boyfriend's name, remember my birthday, ask about how my weekend was, etc. They would ask for feedback on how they were doing and what they could do better, and actually listen and change accordingly. They would get down into the trenches with us on a regular basis and never threw us under the bus even if we had made the mistake. They were all people I wanted to be friends with and work very hard to not disappoint. Their actions inspired loyalty and dedication, not fear.
So with all that said, a good manager needs to be a likable person, honest, a good communicator, a genuinely caring person, a referee, highly organized, articulate, firm but not bossy, proactive, and willing to listen and act on constructive criticism. Now most of this can't be put on a resume, but leadership roles can and will help you hone and refine these skills. Determine the type of manager you want to be and then just practice.