Cyberpunk 2077: Phantom Liberty

Is the DLC that good to buy it? I ve played for like 2 hours the clasic game and i enjoy it and i am considering buying also the dlc.

What are your opinion on it? Does it adds a lot of hours to the game? I am mostly a casual player that maybe playes 1-2 hours every 2-3 days. Also, does my current progress will be lost in case i will buy it?