Hi there and welcome to the forums,
I'm very sorry for the accident which led to your budgie's escape.
It's too soon to give up on the search for your lost budgie, there is still the chance he is alive or has been rescued by someone.
You can look for him, place flyers around your neighbourhood and nearby pet stores/vets advertising your lost budgie. You can also use social media outlets to make this known.
To comfort your female budgie and reduce her stress levels, you can cover the cage on 3 sides (leaving front part uncovered) and have some soothing music on for her.
You can keep her company by sitting close to her cage and talking to her in a calm, positive, encouraging and reassuring way. This is the first step in terms of getting your budgie used to your presence, of making the first connection with her and establishing the foundations of trust.
I'm sending my prayer and best wishes in hopes you will be able to be reunited with your male budgie.