It is difficult to say which programming language is the "best" for you, as the right language for you will depend on your specific interests, goals, and experience. Here is a brief overview of some of the key differences between Python, Java, and C# to help you make an informed decision:
Python is a popular, versatile language that is often used for web development, data analysis, and scientific computing. It has a simple, readable syntax and is relatively easy to learn, making it a good choice for beginners.
Java is a widely-used, object-oriented language that is often used for building large-scale, enterprise-level applications. It is known for its reliability and security, and is commonly used in Android app development.
C# is a modern, flexible language that is often used for building Windows applications and games. It is similar to both Java and C++, and is a good choice if you are interested in developing for the Microsoft ecosystem.
Ultimately, the best language for you will depend on your specific interests and goals. You may want to try learning a few different languages to see which one you enjoy the most, or consider consulting with a mentor or advisor to help you make a decision.