OK! So this Lightning Bitcoin isn't THE Lightning Network ? 
https://coinmarketcap.com/currencies/lightning-bitcoin/
Now I think it's better to use Lightning than a custom layer 2.
Haha, no that's an altcoin. https://coinmarketcap.com/currencies/lightning-bitcoin/
Now I think it's better to use Lightning than a custom layer 2.
Basically back in 2017 they created a large number of copies of bitcoin and all of them are named things like "lightning bitcoin", "micro bitcoin", "bitcoin cash", "bitcoin SV (scam version)", "Bitcoin pizza"...
You can see some of their names here and also claim your airdrops if you have any by checking old addresses: https://findmycoins.ninja/