So there are 21 million total because that is how it was coded. Will it be possible to increase the supply or even make it infinite if someone was able to crack the code?
The maximum supply cannot be increased or decreased even by the Satoshi who created bitcoin, so no one can crack anything and if they do their node will be isolated from other nodes so there will be no change in the actual bitcoin blockchain network. While trading volumes are highly manipulated by the most f the exchange by wash trading.