Help me.....

The job depends a bit on who you work for and a bit on your aptitudes. There are various categories for industrial or systems engineers too. Both these engineer types are much more likely to work for larger corporations, either directly or indirectly. There would often be an accent on factory operation, efficiencies and cost saving. Workplace safety would perhaps be an issue as it is often addressed by engineering controls. I don't think it matters what kind of engineer, so long as it appeals to you. Remember that university is only the beginning of the training, real skills come on the job. Maths, think of it as a means to an end. Once out of uni it will be different, you may never use it, or you may use it every day, but via specialised computer applications, point and click. Calculus and physics are useful, but it is physics that you deal with daily, and calculus that allows you to do things others can't quite do. I might say that physics and maths change as you go further. The best approach is to understand what they are useful for.

There are various kinds of management associated with engineering, including project management, time, people in some ways, team, safety, quality. Management can involve operations, maintenance or design. What you end up doing probably relates to the needs of the company, and what they perceive you can do, and what you perceive you can do. Ready, willing and able, key words for employment.