Wikipedia Expert for Bio Article Revamp -- 2

I'm currently facing significant challenges with the rejection of my Wikipedia articles, specifically within the subject of biographies. The main sticking points appear to be issues around 'lack of reliable sources' and 'speedy deletion'.

I am seeking assistance in:

- Identifying causes for rejection
- Revising the current text of the articles
- Sourcing reputable references for the biographies

The professional ideally will have experience or a deep understanding of:

- Critically evaluating and revising existing content
- Knowledge of requirements for sources credibility on Wikipedia
- Addressing the rejection issues
- Familiarity with biographical content on Wikipedia