Everyone can do many things. In some instances, they may have to do without knowing it was wrong, or it may be, or know what the consequences are, however, still continue.
Everyone can do whatever I want. At times, he may have done without knowing what is right or wrong. Or might know the consequences, but it is also to do next.
Everyone can do a lot of things. Sometimes he may have done it without knowing what is right or wrong. Or they may know the consequences, but do still continue.