I went on a diet (before Covid) and lost over 20 kilos in six months.
For the first two months I went on "no added sugar" diet (no sugar substitutes etc. No "diet" or "sugar free" drinks). If there was mentioning of sugar in the contents list, or any of the more than 50 different names manufacturers use to try to trick you, I didn't eat it. Most people don't realize how powerful drug sugar is. I felt withdrawal symptoms and everything, especially the first week. That took care of over 10 kilos, while eating as much as I wanted, with no training. This was followed by four months on Keto with same rules, eating as much as I wanted, no training. Although I did try to reduce the size of meals a little by buying smaller plates.
Man it felt good to lose that weight. Blood pressure dropped, I was much fresher in the mornings, needed less sleep, didn't get hungry, clothes were not restricting anymore, didn't feel cold as much.
Then I went on a trip back home, got into some bad food, and took some back with me. Unfortunately I've found again half the weight I lost.
I'm against aerobic training for weight loss. Aerobic Training causes the readily available fuel in your body to drop. Then your body creates subconscious cravings for high energy food, i.e.. with sugars. Which leads to you "rewarding yourself" with an energy bar, protein drink or something. Which ruins the gains you made in hour of training. Lifting weights build a little bit of muscles (less than most think) so your weight loss is slower and the wish to "reward yourself" is just as strong.
I'm all for training to get into shape. Start slowly, make sure you don't overdo it. Begin with walks followed by stretches. After a while a "couch to 5K" program can be rewarding.
There was a guy who said "Your diet controls your weight. Your training controls your health. Don't get these confused." So far I've seen nothing to disprove this KISS statement.