Accessing icloud drive using wifi only

I enabled icloud drive on my iphone so that i can view information that is on my macbook. I want to use only wifi when accessing my icloud drive. I checked on the internet. The instructions said 1) Goto settings

2) Tap on icloud 3) Tap on icloud drive 4) Scroll all the way down and turn off the option to use cellular data.

On my iphone i don't see the option to use cellular data.

Would appreciate any help to resolve this issue. Thanks.

Phone : IPhone XR

OS : 13.6.1