To use Dapps on Soneium (e.g., staking, withdrawal, trading), you'll need ETH. Users can bridge ETH on Ethereum Mainnet to the Soneium network.
Soneium provides the bridge infrastructure list on their docs. Users can use one of them to transfer ETH to the Soneium network. Also, according to the official bridge from the Soneium docs, we will be using Superchain for this guide.