How to adjust the projector screen when it is tilted?

The projector lens is not aimed at the right center of the projection screen, and the right is large and the left is small. The main reason for this phenomenon is that the screen is not perpendicular to the projected image. You can move the projector to the right a little, and then adjust the trapezoidal correction function of the projector properly to make it 90 degrees from the projector.