India may have a long way to go in aspects you have mentioned, but the way the Indian democracy works, it has enough checks and balances to make it work as intended, which IMO is among the best if not the best.
PS: I have worked at booth level before, during and after the elections in India, to know the intricacies of what happens during the whole process.
This is not an exageration anyone jumping in the train from their biggest cities will know.
https://www.ritimo.org/Slum-Settlements-on-Railway-Land-A-St...
not saying that progress has not been made. But calling India the best democracy is not factual worse it's a blatant lie. It is a country where you can (should) bribe public officials i.e: "A study conducted by Transparency International in 2005 recorded that more than 62% of Indians had at some point or another paid a bribe to a public official to get a job done"
I am from India, in India. You have only read about it, I live in it. Not saying the slums around railway lines are not there but the condition also has improved a lot. 2005? That's more than a decade back.
Democracy doesn't mean Utopia.
Feel free to disagree and say that India is not the best democracy on earth. But it'd sound credible if you can tell which country is the best democracy as per your data/facts/beliefs, and probably share that too.