Ok, then you can connect your sparrow wallet to public electrum server.

Consider running your own node later.

https://sparrowwallet.com/docs/best-practices.html

You can coinjoin privately with Wasabi Wallet for desktop without needing to connect to your node first. It's far more private, blockspace efficient, and cheaper than Whirlpool:

https://www.youtube.com/watch?v=UbOAbXjzBJg