My little experience.
I also like to practice at home when I have nothing to do. Most people practice muscles, basically arms, abdominal muscles and chest muscles, because these places are easier to practice and more likely to show a strong figure.
We don't need any equipment at home. You can do push-ups and sit-ups every day, practice abdominal muscles and chest muscles and some arms. You can also buy a dumbbell to practice your arms alone.
It is important to lose weight and exercise muscles in different ways.
Losing weight means low exercise intensity and long time; You have to train your muscles to exhaustion in a short time.
For example, push-ups do not specify the number of times each time, but do them at the fastest speed until they are really weak, and then repeat them two minutes later, usually three times.
I have been doing this at home for more than two years. Simple and effective. You can try.