From personal experience, I will say that walking is very helpful in losing weight, provided that you do not gorge on after walking for an hour and do not eat after 19:00, only water. Health and well-being for all!
No, if you rely only on exercise. Losing weight is a decrease in the number of calories received in relation to consumed. If you increase energy consumption (physical exercise), the body will try to restore them, i.e. appetite will increase, food calorie content will increase. With physical exercise, you can lose weight, you do not need to lose weight. But by following a diet, you can lose weight without exercise.
Yes, you can, but difficult. The main thing to learn is that you need to consume less calories than you spend. Next, you need to change your lifestyle and nutrition, mainly so-called complex carbohydrates (rice / buckwheat) and vegetables, not fatty meat, should be present in the food. You need to eat small portions of 5-6 meals a day and drink enough liquid.
Next, you need to understand how quickly you want to lose weight. If you want a 10kg result in 6 months, then daily exercises and walking at a moderate pace are for you. And if it "burns" and you need to lose 10 kg in a month, then there is nothing you can do to help you go to the gym and "plow", a good coach will pick up a program and diet for you, and you will begin to progress.
In conclusion, I want to say that the process of losing weight will directly depend on your abilities and genetics. But nothing is impossible, if you want to do your transformation, then go for it.
Quite. If you just want to lose weight, then it is enough to develop a diet for yourself taking into account your data (height, weight, age, etc.). A short jog every day and basic exercise will work well with your diet. The main thing is not to deceive yourself and do everything honestly and persistently :)