No, there is no causal relationship between the two. Most of the sweating is reduced by water, not fat, so you will find that sweating (euphoria) is much lighter after exercise, but it can change back in a few minutes after normal diet and hydration (eggs are useless).

Losing weight is very simple. Keep your mouth shut and your legs apart. If you can't make ends meet, you will naturally consume fat for energy. It is recommended to pay attention to diet (needless to say, there are various reminders on the Internet that you must eat what you should eat without breakfast or dinner), plus 30-60 minutes of aerobic exercise three times a week (the next day), and then two or three strength trainings (muscle mass is directly proportional to energy consumption, and even if you sit still, your muscles will consume energy to help you lose weight).