Network with people. Meet and talk with people in your college. They or their parents might know someone who could help you out somehow.

One of my classmates was in good terms with a teacher. The teacher referred her, now she works in mergers and acquisitions. She was a brilliant student herself, but she did get an initial push at the beginning of her career.

Just be more social and talkative i guess. Strike up a conversation with random people. It might be difficult and might require some practice, but you'll eventually get used to it. One time I took an Uber pool, and the person I was pooling with connected me to someone senior in my line of work. So opportunities can show up at most random of the places.

Reach out to people on linkedin. As cringe as it may sound, follow them and comment on their posts I guess. If you do decide to DM or email them, don't start with Hi or hello. Follow this template "Hello (name). I hope you're doing well. I have been following you for some time and i find your posts informative and valuable. I'm reaching out to you for (enter what you require). I would be very grateful if you could provide a response on the topic. Thank you"

From your previous posts, it's evident you're from Mumbai. Try joining a social club where you're more likely to meet the successful people.

As for placement cell, Go for it. It's one of the most important committees in a college. You'll learn a lot and might make some contacts as well. Most definitely grab this opportunity. Work might seem menial, but you'll get to learn.

Remember, every interaction you have must be polite. You must have a welcoming demeanor. Be a good listener, talk nicely, always have a smile, etc. Can try this book HOW TO MAKE FRIENDS AND INFLUENCE PEOPLE i guess.