LN solves Bitcoin scalability issues but the reason why LN failed to take off (which I infer from your last explanation) is since most of the transactions are managed by LN not by the bitcoin network.
No, the reason lightning hasn't taken off, is that first of all Bitcoin as currency hasn't taken off (while recognized as superior money), and also the cost and security risks of managing a lightning node. To backup your cash in Bitcoin, you just have to keep a seed phrase in paper. To back up a lightning channel, you need to use digital space, which is prone to error.
If solving scalability issue alone can take you to moon then there are thousands of tokens that are super fast when compared to Bitcoin.
No, there are thousands of shit-tokens which have either zero volume which makes their transaction cost minimum, or have enormous block size limits, which makes their whole system fundamentally inferior and prone to centralization.