making 20 minutes PP presentation

I am looking for a freelancer to help me create a 20-minute PowerPoint presentation on an educational topic. I am seeking a professional and clean visual style for the presentation. I need assistance with researching and writing the content.
The topic is: The role of management in solving contemporary issues and global challenges

Ideal skills and experience:
- Strong research and writing skills
- Experience creating professional and visually appealing presentations
- Knowledge of educational topics and trends