Can you suggest some cost free way to make bitcoins / Ethereum?
There is no maximum way to get free bitcoins now and even if there is such as a faucet will not give you any profit because it is not worth it. It is better for you to allocate a sufficient budget to buy and use the DCA method as a step because even though the availability of money you have is small, this pattern is much better than expecting something free now. Bitcoin is already so valuable that something that is obtained for free will certainly not provide an amount that is commensurate with what we expect.