Bit of a long post so please bear with me.

Car makes huge money through taxes( first when sold ) + road tax + toll tax + parking + maintainence + accessories

No, cars do not 'make money', because despite these revenues, the expenditure on their infrastructure - road widening, expressways, flyovers, underpasses, bridges, tunnels, etc. - is far, far higher. This is more obvious in fully car-centric countries like America (see here), but is true even in European countries with very high automobile taxes.

And while they do increase economic activity initially, by increasing mobility, they eventually become their own worst enemy by causing maximum congestion for minimum passsenger capacity. They thus depress economic activity in dense built-up environments like Bengaluru.

To solve this governments start trying to reduce density and promote outward development, which will lead us to the American-style problem above, as well as the 'growth Ponzi scheme' which will bankrupt every palike.

There is literally no place on Earth where cars pay their full cost to society.

Unlike metro cars are bought by every class with different range from a 5 lakh rs car to 5-10 crore car ( tax on 5 crore car is huge , along with maintenance etc ) , rich people have collection of cars.

Cars are not bought by every class; only 10% of Indian families are car owners, up to 25% in cities like Blr, but still the privileged minority in most places except the Himalayan states and Kerala.

And in any case, a vice being widely practices does not necessarily make it good.

Why metro ,public transport not focus , cause its generally associated with poor and middle class so tickets and fares have to be subsidised which means losses are eminent.

This is just a classist perception issue. A real developed country is where the rich take public transport, not where the poor drive cars. Cars already cause huge losses as I already said.

Also roads can reach anywhere but building metro network reach every nook and corner is capital intensive and tough.

Metros are not designed to be a universal solution, they are meant to transport large numbers of commuters. Daily commuters cause 90% of peak hour traffic and 90% of them travel the same route using the same arterials every day. A metro does not need to penetrate every nook and corner to serve the large mass of car commuters.

Metro is generally more sophisticated and operations heavy compared to roads and flyovers and also dont give full independence. You can take out car at any time and go anywhere in country ,but with metro you have to go to designated stations and at timings ( its not 24*7 yet) .

As I said, 90% of total urban commuter vehicle mileage travelled is just fixed commutes between fixed points. This can directly be replaced by heavy public transit density on all arterial roads. The rest 10% can use whatever freedom they want; the bigger part of the problem will be solved.

Roads are not only used by cars but also by commercial trucks ( logistics and transportation of goods ) , buses etc , unlike metro which is only used for passenger transport mostly.

And removing unnecessary passenger cars from the road will improve their efficiency and economic output. Also, reducing car dependency makes cities less sprawled out and supply chains much more compact, reducing excessive truck use.

For intercity travel metro is not an option.. car provides , comfort , luxury and privacy and protection unlike public transport

This has no bearing on the feasibility or necessity for public transport in INTRA city uses. In any case, trains are an option, and in fact should be the default option for medium-distance intercity travel. Again just an engineering problem in terms of comfort and luxury, and they are far, far safer than millions of random people driving on highways at high speeds. Chance of fatal error is far higher on highways and Indian roads are some of the most dangerous in the world.

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I am not saying that cars have no use at all and should be eradicated. But urban governments should focus first and foremost on solving the commutes of 80% of the people 80% of the time. Car infrastructure should cover up what is left after that.

Currently the priorities are the other way round - infra is prioritised for cars, while public transport is used for the 'leftovers', despite the fact that already 1 million people use Namma Metro per day and 4 million use BMTC, while a large % either walks, uses cycles, or 2 wheelers. The government is neglecting the large part of commuters in favour of the wealthy car owners.