About a year ago, I completed my bachelor's degree. Late while pursuing my degree, I took an electromagnetic focused physics survey course and realized I wanted to study physics and apply my programming skill along with it. After completing my degree, I have worked as an Automation Engineer at a semiconductor company programming software that relates to physics (physical vapor deposition(within a vacuum)).
My goal is to become a computational physicist. I thought the next step for me to accomplish this was to pursue a master's in physics. I have realized I do not have most of the prerequisite math/physics courses to be accepted into almost any postgrad physics program. What should be my next course of action to become a computational physicist? I am assuming the two main options are to pursue a separate bachelor's in physics or take the required prerequisite math/physics courses(at a community college) and then attempt to be accepted in a postgrad physics program.
Relevant course work and occupation work
Below are the relevant math/physics courses and occupational work that I think(might be wrong) is relevant to becoming a computational physicist.
General Physics II (Survey of electromagnetic field/thermodynamics/relativity(very brief))
While working at a semiconductor company, used machine learning(binary classification) to create a vibration sensor to determine a machine's state.