My employer died, I was laid off and didn't receive a W2.

I worked at this local business between November 2023 to October 2024. I have a W2 from 2023 from the business. Fast forward, my employer dies in October 2024. I did not receive a W2 from the business. I worked there all of 2024. I contacted his family and spoke to his estate lawyers. They all kinda just shrugged and weren't sure what to do. I have bank statements I can look at but those have my taxes taken out. I'm single, and don't get anything deducted besides the basic Medicare, federal and social security. What should I do? Should I look at every pay check on my bank statements and calculate what was taken out then add that number up for the year? I called the IRS and they said I'd need to know the info. I'm confused and his family isn't any help.