Missing Videos in icloud photo library
I am using iPhone SE 16gb.
Due to low storage space, I have turned on iCloud photo library.
2 days ago I have shot some videos with my camera app and have seen them at iCloud.com>photos synced and stored in original resolution.
Now I am confused whether I have deleted them from my phone or not, I am unable to find them at iCloud.com>photos
They are gone ... not even in the 'recently deleted' folder.
I have talked to phone support just now and was told that if I deleted them from my phone then it will be automatically deleted from iCloud photo library and they can't be recoverable. However, I am reading in the web that it is a little known fact that deleted photo if once synced with apple server will be permanently deleted after 30days.
Is anyone faced similar problems? Is there any chance I can get those videos recovered by writing to apple etc ?
Thanks in advance.
iOS 11.2.6