Hey, so here's my 2 cents. Currently the amount of people coming into cities is still high, not sure about the numbers but in my experience I've seen under-construction projects sell out in a few days, so there is demand in the cities especially city centres and you will see a trend of premiumization of houses. Pricing might stagnate for the next 2-5 years but will not go down.
The ultra rich are buying real estate outside the city. Mostly Goa, where I've seen villas sell for 20Cr + so there's a trend of investments going to places with less pollution, and offering a better standard of living.
There is a current market gap of being able to maintain and service NRI properties, like you said when people go abroad it's very difficult for them to maintain their houses back home.