I have been searching for a good explanation about this, maybe here you may clarify it to me:

To withdraw ETH from Binance to a Metamask we have the Etherium (ERC20) network, the Arbitrum One network and others. The difference of fees is brutal. Why would I use ERC20?

The same happens to Bitcoin. Using BTC Network and LIGHTNING makes a crazy difference in fees. What is really the difference?