I want to restore my Amazon Elastic Block Store (Amazon EBS) volume or snapshot that I deleted, but I don't know how.
After you delete an Amazon EBS volume, you can't restore the volume. If you created an Amazon EBS snapshot of the volume, then you can use the snapshot to recreate the volume to recover the data. It's a best practice to create snapshots of your volumes to prevent data loss when you delete a volume.
If you deleted your snapshot, then you can recover it only if you activated Recycle Bin in the AWS Region where your resources are.
Refer to the following documentation to restore your snapshot from the Recycle Bin:
After you restore the snapshot from the Recycle Bin, you can create a volume from the snapshot to recover the volume's data.