When a camera shoots a subject or a scene, the shooting parameters are not fixed. Different places, different time periods, natural light and artificial light can't be the same. How can there be fixed shooting parameters?

I can only tell you that if there is only lighting in the room, the aperture takes priority, f5.6, ISO 1600, try it first, and then adjust it if it doesn't work. Hand-held shooting is easy to paste, and it is best to have a tripod, which is not easy to paste.