Unless you have any underlying medical condition that prohibits you from fasting, just time restricting eating to 8 hr (or less) window helped me cut down a lot of weight. Nothing fancy, just remove sugar and flour from diet or at least keep it minimal and get good sleep. I occasionally go for a walk, no gym. thats it.
OTOH, I have friends who can afford to eat whatever the hell they want, but they work out like crazy in the gym to remain athletic. Everything has a price, you need to decide how you want to pay for it.
I started not eating after 18h and already lost a kilo this month. Calorie counting also worked for me in the past, lost 10kg that way, but it's a bit demanding.
OTOH, I have friends who can afford to eat whatever the hell they want, but they work out like crazy in the gym to remain athletic. Everything has a price, you need to decide how you want to pay for it.