LEAD() & LAG() function in Looker Studio

Hi,
Do we have Lead() & Lag() functions in the Looker Studio fields?
if not then what are the alternatives which can be used to serve the same purpose

Now we have offset function that can do this.
Refer to https://cloud.google.com/looker/docs/functions-and-operators

Offset is an unsupported operator in Looker Studio

any solution for this ?