Acknowledge Your Feelings:
Accept that you are lonely or have a monotonous life and you need to make the change.
Don't hide behind "I'm an introvert", no you are just lazy and you are ok with living the shitty life, you just want spoon feeding, nothing else.
Be Open to New Experiences. It's all about initiatives, you have to take risks and put yourself in uncomfortable situations.
Do following at least once per week:
Have lunch/dinner/ outside your house.
Watch a movie in the theatre instead on your laptop.
Work from a cafe. Talk to a stranger.
Play a sport/game, you don't have to be good at it. Many people just play for fun.
Find events:Just google "events near me" or "events in bangalore" etc.
Give priority to physical in person experiences instead of digital ones.
Explore your surroundings, go for a walk in the morning or evening, take out time, talk to your neighbours.
Reach Out to Colleagues or Alumni, we all have active fiends, get in touch with them.
Take Classes or Workshops, even if you are not interested.
Don't hesitate to spend money on experience, see money as investments, not expenses.
Don't self reject: means don't think about what would happen and just at home, anyway you aren't doing anything.
People took initiatives to start groups & clubs, either start one for your area of interest, or join one.
Practice Self-Care and Stay in Touch with Loved Ones: you know what that means.
All this would impact your personal & professional life as well. You will stop blaming your job/manager/colleagues and accept that you were the problem, it's your choice to change your life.
If you don't do any of this and still cry about your life, hope you know that "nobody cares about your shitty life, nobody is going to come save you, you are on your own and survival of the fittest". If you don't put in the effort, you deserve whatever shitty place you are at.
It might not be as easy, but don't let yourself take advantage of you.