Hello friend. Indian American here. My parents immigrated here, and their ticket in was education. I understand your grades aren't great, and I also acknowledge that my parents did come from middle-to-upper-class privilege.
I work for an IT company who employees (not outsources) individuals in India. Several of them have left India to come to the U.S. or Canada. For all of them, education has always been the way out. They knew they wanted out, so they grinded hard in the short-term, and applied aggressively abroad for graduate-level education.
Find a niche in something that does interest you. It seems you are very socioeconomically aware, consider something in such a realm that makes you stand out (yes, I understand this is easier said than done, especially in a nation of 1.3...1.4? billion).
Saying that, also understand that STEM-related expertise areas are much more sought after. So it might not be a bad idea to focus on that side and/or diversify.
I won't contest a lot of what you said about India - much of that is accurate. Some of that is more cynical than necessary. But change is slow and it would be wrong of me to tell you to stay and change a nation in a region notoriously resistant to change. Unless you're the next coming of Barack Obama charisma, in which case, please help change India, hahaha.
You're young, you have plenty of time. So don't feel burdened not finding a spark at this era in your life. My Mom immigrated here only after marriage, when she was 28. The coworkers I've mentioned have all been in their late 20s or early-to-mid 30s.
I want to add - you're not worthless. Don't devalue yourself needlessly based on the decrees of an unfair and unjust society or uncaring peers and family.
Yes it only works on Pixel phones. For other devices I recommend looking at DivestOS, CalyxOS, and LineageOS - in that order from best to worst insofar as de-Googling and privacy are concerned.