Ethereum Layer 2 solutions are secondary frameworks built on top of the Ethereum blockchain to enhance scalability and efficiency. These include rollups, sidechains, and plasma, which help reduce transaction costs and increase speed by handling transactions off the main Ethereum chain.

However, what is questionable is that the gas fee of the layer 2 network has decreased significantly after the Denkun upgrade, but the gas fee of the eth network, which is the mainnet, has not changed at all. I'm so sorry about that.  4 $DEGEN