The types of food you eat don't matter if we're talking about strictly weight loss and not overall health, wellbeing and satiety . It's the amount of calories you eat. You need to eat less than your TDEE a day (google TDEE calculator) to lose weight, if you eat 500 less you'll lose approximately 1lb per week (1lb of fat =3500/ 7 days = 500 calories a day).
if you're not willing to count calories properly then you're out of luck as you have no way of knowing if you're in a deficit (eating less than your TDEE) or not. Some people can get away with just reducing portion sizes, but depending on your TDEE your window of calories may be too small to just eyeball it and guess. Eyeballing it works better for men, particularly large men as they require more calories to sustain themselves so have a higher TDEE, this means they have more room for error.