How to correctly send zfs napshot to TrueNAS

[Sturmkater]

Hi everyone. I'm making a new tread to be sure the syntax is correct for my setup and I don't mess up my system. After all, I try to get a prober backup to prevent system failure

So to the situation, Im running proxmox and in it TrueNAS as a VM. My goal is to send a proxmox snapshot to a TrueNAS share loaded over NSF in my proxmox called Backup. I followed some tutorials I found online but I'm not sure it its stable for me.

First I did a snapshot

Code:

zfs snapshot rpool@nameanddate

next I should make a new pool. Isn't there already a pool on my Backup zfs drive? Will I override the stuff there with this command?
If I dont make a new pool with "zpool create backup /mnt/pve/BackupNFS", how can I send it to this drive?

Thanks for help and clarification