The procedure is to go to the labor department for unemployment registration first, then fill in the original certificate of termination of the contract (indicating that it was terminated by the company), and fill in the unemployment registration form and the Employment and Unemployment Manual. After that, take the Employment and Unemployment Handbook and submit it to the social security department together with the original contract, social security handbook, employment and unemployment handbook and other personal files.
Also, I have to deal with it myself, because you are unemployed and the unit can't handle it for you, so I have to deal with it myself.