The pictures in the patent were copied from the Internet, so don’t you need to draw them yourself?

Look at what the picture is used for. If it is to explain existing technology, you can use the existing one;

If it is to explain your improvement points, then you need to draw it yourself. If it is copied online, it is an existing technology and theoretically cannot be authorized.

When using pictures, you need to pay attention to ensure clarity and do not use color pictures.