About to appear for my CS-SY exams, will start TY soon, still not great at coding, haven't fixed a domain yet, tier 3 pvt clg, govt uni

Neep help deciding what's right, confused between choosing domains, don't know whether to stick with web dev or shift new domains like blockchain and ai also domains like cybersecurity have more job openings but due to clg classes I have started liking Java programming Need smtg to get started on as simple goal is to earn money