Do I understand correctly that I can use the infur server to install the node?
Welcome to the Infura community @Hannani_Nasuha. You use Infura so that you don’t have to install a node yourself. Though you have the option of running both: Use Infura as a backup for your node - Infura Docs
I haven’t been whitelisted yet.
@Hannani_Nasuha any communication or talk about zkEVM testnet should be in the zkEVM channel of the ConsenSys Discord. There is an invite to the Discord on https://consensys.net/ .