If your college/university teaches you anything on Matlab then most likely they have Campus Wide Access license.
Which means you can use your student university email to register an account with Matlab and gain free access to use Matlab and Simulink software on your own PC/Mac computer.
After downloading the software and installing it, make sure you select all the libraries you need during the installation process.
Also make sure you are signed-in, in the software itself using your Matlab account, for the license to activate.
The problem is that Matlab isn’t free nor gratis. It is closed source commercial dev environment for a high price. It might be of no cost for students, but after being a student it costs a lot. Also, there are really better ways to learn programming than Matlab. It doesn’t even support OOP.
As such, i would really recommend to any student to avoid Matlab if possible. Learn real languages such as Python, C++ etc.
I started my MSc and part of it involved building a ray-tracing simulation. I built it in MATLAB, but the technical debt quickly became so high that I had to rebuild it all in Python.
MATLAB does have classes, but it is hot garbage. Distributed computing is also awful (I moved to Python and Pyspark in quick succession and life got a lot better).
The only industry job I have seen request MATLAB was for legacy companies like Telesat and I wouldn’t be surprised if they were moving towards Python since the license fees are insane.