Need help for weight loss meal plan/prep

Hello, I'm attempting to radically alter my diet to lose weight, but I have no idea what I should be eating specifically to stay under a certain calorie range. Would you kindly take the time to recommend things for me to buy, recipes with instructions on how to prepare them, and essentially provide me a menu plan for a day's worth of meals?

I'm a chubby 27 year old, with a height of 5'9, weighing 120kg, and I've been living an extremely sedentary and lifestyle over the past six years, since finishing colleague.