The Samourai wallet is just one of the clients for Samourai Whirlpool implementation. If you don't like mixing on your mobile, just install another client, for example a desktop client called Sparrow Wallet. Sparrow wallet doesn't use Samourai servers to receive the information about transactions or UTXOs. You can connect it to your own Bitcoin Core full node or your personal Electrum server to preserve privacy.

You can find more information here: https://sparrowwallet.com/docs/mixing-whirlpool.html