Yes, Bitcoin has a widely used Layer 2 solution!
I know you are familiar with Lightning Network (a secondary layer to the Bitcoin blockchain), El Salvadorians used that network for faster and cheaper transactions involving Bitcoin in the Chivo app. Not only the El Salvadorians using the Lightning Network but also Cash App and Paxful.
For more reports about the state of the Lightning Network:
https://arcane.no/research/reports/the-state-of-lightning-volume-2While LN surely gained some usage from avenues you've mentioned, but I really still wouldn't call it "widely used". Using fast and easy-to-use shitcoins like Tron are still far more adopted in a broader sense.