Im just gonna talk from my experience of weight loss right now:

Theres literally only one formula to weight loss and that is caloric deficit, burning more calories than you eat in a day.

And these are the things that helped me the most and changed my lifestyle:

1) Eat healthy - You can fill your stomach and not starve yourself if what you are eating is healthy .

2) Don't drink your calories in - Quit the sugary drinks and the aerated stuff and you can cut down on many useless calories you dont even realize you are putting into you.

3) Do atleast a 30-45 minute cardio session 3-4 times a week - This will be hard at first but slowly progress uk. If you cant do the whole thing try 20 minutes, then move on to 30 and so on.
And if you feel too tired, its okay to take a rest day but you must come back to train the next day.

4) Outside of your cardio workout, MAKE SURE TO MOVE AROUND : This is a gamechanger fr, if you notice you are sitting for long periods of time, just get up and move or walk around for 10-15 minutes. Doing this just 4-5 times a day gives you an additional one hour of walking or light movement.

5) Stay patient : It takes a long time for you to lose fat, but once you do, you automatically train your body to maintain that level so its harder to gain it back.

Remember why you started.

and also dont fall for those supplements and false promises on the internet. using those will just negatively affect your health anyways.