What to do?

I was graduated in August of '22. I was placed in 3 companies during the campus placement drive, out of which one is an MNC and the other two are, let's say pretty famous in India. But due to bad decision making and other factors I decided to go with the MNC. It's been a while now yet there is no information from the company. The last mail I received was in the month of November, which is why I am afraid now. Are there any internships or job openings I can apply for?

I'm an non IT candidate with decent skills in programming. Are there any courses I can do meanwhile?

Thanks in advance.