Retirement tax questions

Thanks again…Can uncollectible small claims judgments in CA for personal loans be declared on tax return? Also I bought partial interest in the auto shop. I sold fairly quickly to get money out. It was bought with a contract I wrote up and we both signed. The owner collected the money from my buyer, but never gave to me. He subsequently went out of business and I attained money judgement. How is that handled at this point? Thanks for all. dan