Sometimes the neighbors really interfere with sleep. Annoying sounds have different timbre characteristics. It can be male or female voices, the clatter of dishes, stamping of feet.
It is known that if the sound is repeated at a certain frequency, the brain begins to perceive it as a background and does not respond to the stimulus. Thus, if you turn on the noise-masking sounds (which are equivalent in volume to interfering sounds), it may become easier to fall sleep.
This sound file includes several types of sounds in a wide spectral range. I hope someone finds it useful.