Hi @Angel Rendiles
If the witness fails, you still have two votes (nodes one and two) that represent a two out-of-three majority. It doesn’t matter if you lose the witness whether it's disk, file share or cloud witness because you still have a two out of three votes. Because nodes one and two are still healthy, SQL will keep working on node one without any failure or failover.
For more details, you can refer to this link: https://continuitycentral.com/index.php/news/technology/2774-understanding-windows-server-cluster-quorum-options.