Objectives and Key Results can be a bit of a mystery, but actually they're surprisingly simple to implement. And with a few pointers you can do it really well and succeed. Here are a few articles about OKRs to get you started.
What are Objectives and Key Results? (OKRs)
How to write good Objectives and good Key Results
Committed vs Aspirational Key Result types
Examples of good OKRs done well, and bad OKRs done poorly
How to score your OKR progress
How to set OKRs - what process you should go through
Template for Objectives and Key Results (OKRs)