If your wall is a gypsum board

Hit the screws on the base (pillars and plywood veneers, etc.).

How to find your foundation is:

Knock the wall (if there is no foundation, it will make a light sound).

Stitch with a needle (commercial: gypsum board wall)

Uses a sensor (commercial: underground sensor).

If your wall is a gypsum board

Anchor (PR471) disperses the force and sticks to the wall.

If your wall is wood

You can fix it well with the screws alone.