References when my manager was laid off too - 3 weeks in

My manager was laid off too and I am unsure who to use as a reference. I am in Honolulu, in case local advice matters. I have one former client who liked my work. Is a client acceptable?

Use a professional network to find a former manager. Many will still write a note.

Ask former colleagues and supervisors in a short message and give them a summary of the job you are applying for.