The best result is a combination of cardio load with strength training. Let me explain why.
You burn more calories on cardio than on strength training. But on the other hand, after strength training, your body continues to spend energy for some time (on the restoration of muscle fibers), i.e. burning calories continues.
If there is time and opportunity, it is better to do 3 circuit workouts per week. Make a program or contact a trainer who will take into account the peculiarities of the figure, problem areas, health, etc. You need to do 3-4 approaches of each exercise, and in each approach there should be 15-25 (and sometimes up to 40) repetitions. This is the scheme that works for fat burning.
For 3 strength exercises, add 1-2 days of cardio, when you will run for 40-60 minutes. And also cardio (at least 20-30 minutes) can be done after strength. For example, if you trained your arms and back, then you can also run. If you trained your legs, then look at how you feel so as not to overtrain. But usually you can still run for at least 15-20 minutes.
And do not forget to stick to the correct diet, otherwise there will be little sense from training.
Seek help from your coach! Well, he, in turn, draw up a diet and workout. In this case, without a balance of physical activity / nutrition / rest, results cannot be achieved! I think that in order to achieve minimal results, it is worth achieving a deficit in calories consumed (often it is enough to exclude sweets, starchy foods, sweet water, alcohol. And add more vegetables (not fruits)!), Try to normalize sleep patterns (sleep 7-8 hours), and add physical activities (walking, jogging, charging). As for the gym, you can work out on all simulators, and pay special attention to cardio training (keep your heart rate around 120 beats per minute). It is better to approach training with free weights (barbells, dumbbells) with a knowledgeable person who will help you achieve technical skill in performing the exercises. Free weights are the most effective approach, but it is also more traumatic!
Well, here, as in any business, consistency is the main thing to achieve results.
Not enough information for specific advice.
What is the starting weight? Are there any health problems? What is the ultimate goal?
Anyone who advises "find everything on the Internet" is fundamentally wrong. There are many such guys in the hall, they have seen enough of the Internet and are doing nonsense in the hall.
On the Internet, you can spy on food, no more. And then, you should take into account your parameters, the level of physical activity per day, the number of workouts, etc.
Go to the trainer (only sensible), let them teach you how to do the exercises correctly and draw up a program for you. Then there will be a result, beauty and health.
In general, for weight loss, first of all, choose a well-designed diet. This is 70 percent of success.
In the gym, I would recommend basic exercises (squats, for example) combined with cardio loads (treadmill, exercise bike, stepper). If you are a beginner in the gym, then do not spare money and spare your health - contact the coach. At least a couple of sessions will help you avoid serious injury.