I deleted my photos from my iphone and they have gone from my mac. Is there any way I can retreive them?

The following may help: Delete and recover photos and videos on iCloud.com - Apple Support

As you have found, iCloud Photos is a syncing service. Any photo you delete from a device where iCloud Photos is turned on will also be deleted from iCloud and from any other device connected to iCloud Photos. You can potentially reduce the storage space required on a device by turning on Optimize Storage. See the following Apple article for more information: Set up and use iCloud Photos - Apple Support