This.
The opposition alliance is a mix of left, right, up and down, who historically and even now have knife at each other. Them coming to power is the worst that could happen to India now, and pretty sure they won't last even a year at power.
It's the best outcome now, BJP isn't invincible, religious politics proven not effective. India still a strong democracy.
Now BJP can continue their good work, especially at international politics and strong opposition can keep them in check for the policies inside India, which have much room for improvement.
Adding my two cents, major curses to humanity today..
There are million more reasons, but it's just not worth arguing with UK now.