There is unlikely to be any argument on the contention that a good fat loss workout is a necessity for losing weight. The argument can only be on which workout is the best for you. People have different types of physiques, different comfort levels, and above all the weight they need to shed is also mostly different. So, zeroing in on the right fat loss workout will be possible only through trial and error methods.
The best way to go about this is to choose a workout plan that you feel comfortable with. The comfort level may be decided by the type of exercise, its timing, or machine availability like having a treadmill or workout station at home. And once you choose your fat loss workout plan, stick to it for a while, at least for a month, because exercises always take a little time to produce results. If at the end of the month there is some result, even if it is not as good as what you had wanted, it is best to continue with that fat loss workout plan. Of course, if you see that there has been no benefit at all, then it is time to consider another plan.
Before starting another fat loss workout, you should ideally consult a doctor or fitness expert. Quite often it is possible that it is not the plan itself but the faulty implementation of it that has led to the failure. Consciously or unconsciously, many people fail to become in sync with a new regimen and slip back to their former routines. But they fail to acknowledge that it is their own negligence that has resulted in the failure of their fat loss workout plan. The end result is that the flab is all still with them which means that they are still in square one.
Whatever the reasons for the failure of the fat loss workout plan, it is necessary at this juncture to see a doctor. The doctor will be able to conduct the necessary tests and assess whether there is anything in your system that could be rendering the exercises ineffective. If he finds nothing, he may suggest on his own a fresh fat loss workout idea which he considers most suitable to your disposition. It is bound to be the best for you, since it has been prescribed by the doctor after all the necessary clinical tests.