Considering many financial institutes like banks( both public & private), a central bank (RBI), retail forex brokers, and many more such similar firms are involved in forex trading in India, you can make a serious profit. The data says an average Indian forex trader earns close to Rupees 5 lacs a year.
They buy and sell different currencies. Currency trading participants comprise banks, corporations, central banks (like RBI in India), investment management firms, hedge funds, retail forex brokers, and investors like you. Forex trading is a legitimate way to make a profit.