In the last two months, Nostr users alone (decentralized twitter clone like Mastodon) sent each other 2.6 million tips (individual transactions) over Bitcoin lightning. In that same time period, Bitcoin main chain did around 20-40k. Most transactions are on lightning by number of transactions. Maybe not by total value moved, but lightning is pretty opaque and grants additional privacy, so it’s hard to measure for that reason.
Lightning continues to grow and get upgrades (look up BOLT12 if you are curious about the latest upgrades which bring additional privacy enhancements).