I get the context better now. thanks. I personally have experience with owning/defining OKRs like the ones mentioned in below link. The L0/L1 type of definition is a bit new to me.
Here’s a good rundown of how you can breakdown the goals into specific metrics:
https://hypercontext.com/goal-examples/marketing/seo-specialist
If the OKR model doesn’t fit your model, you can atleast understand the range of metrics to track/how to define the goals for L0/1 and their breakdown