one piece of what Bitcoin needs to scale?
For scaling lightning can help a lot. But its not enough, biggest issue is not the transaction number that can be confirmed per minute.

whats even more needed for bitcoin is to be more intuitive and easy to use in real life scenarios.

in the background such random numbers and adresses like=645E0A030230232302032 can be used, ok. but dont let people interact with such.
learn from the internet.

people want to send money to people/businesses/e-commerce shops/vending machines.
they want to be able to easily pay things or get payed.
maybe involve new possibilities with mobiles: near field sensors. btc amounts lower 10 dollar can be directly transferred by pressing one button, if mobile is next to nearfield chip.
Or you can send btc to email adresses (confirmed n registred ones through eth distributed network registry).

etc.
THIS is needed to change our current world to the new money.
otherwise its a technology for tech childs, for holders, for visionary, for traders, for believers. but not for all.