What should I do after BCA. I can't do MCA since I can't afford it. I instead want to try for a government job. Can you recommend options?

For government jobs, start preparing for entrance exams. There are many SBI PO Civil services, RRB, RBI, SSC CGL etc. Fill entrance application forms and start giving exams. Different exams have different difficulty level and scope. Read about each and apply accordingly. Or, You also can do vendor c