How much do I need to live comfortably in Seoul?

Excuse me, I'm planning to relocate to Seoul and I'm trying to figure out my budget. Could you possibly assist me in estimating the amount of money I would need to live comfortably in the city? I understand that the cost of living can vary depending on various factors such as accommodation, transportation, food, and entertainment. Could you please provide me with a general guideline or an average monthly budget that would allow me to maintain a decent lifestyle in Seoul?