CSM VS PSM?
comparing between these types of CSM and PSM?

Training for Certified Scrum Masters (CSM)
An amateur credential called Certified Scrum Master was created to help professionals who are establishing themselves as Scrum practitioners. The precise interpretation of scrum values accountability that emphasizes teamwork, duties, and accountabilities, as well as incremental progress toward a clearly defined objective, is made possible for professionals by this certification.

Instruction in Professional Scrum Master (PSM)
Professional Scrum Master is a training program that emphasizes the Scrum framework, the Scrum Master's role, and process theory and concepts. This combines team-based exercises and guidance and concentrates on imparting the fundamentals of the Agile and Scrum movements.

First-level certificates include PSM I and CSM. Prior to recently, it was virtually impossible to fail the CSM; however, the exam has undergone major alterations.