Install the camera on a solid surface, small trees are prone to moving with the wind, which can cause false triggers.
Clean in front and around the detection area; remove branches, tall grass and anything that might be inclined to move and trigger the camera.
Sunlight and draft of hot air can also cause false triggering. You will then have to position the camera differently.
Opt to install it in the North direction or if this is not possible opt for the South, avoid the East and West directions.
Lower the sensitivity of your camera's detector (PIR Trigger)
Make sure that the (Time Lapse) mode is turned off because this function is used to receive photos in a predetermined time even with no movement or detection.