My soil is full of a root matter. It looks like it grows in banshees. The roots are thin and yellowish white and brown, and the soil is quite dry. I thought I removed it but now a few months later I dig again and find this big ball of roots and soil. It's like a weed that grows underground but is made just of roots. The soil is also very dry, even after a strong watering it is wet only on the first layer. Two inches below is dry, and three inches below all these roots grow. Can anybody tell me what's my problem? I added some photos.
It appears that is a large tree in the background of the image.
The majority of large trees roots are in the upper 18" to 24" of the soil.
Most roots, therefore, the important, tiny, absorbing roots, will be found near the soil surface.
Your soil is feeling dry, due to the fact that the trees or shrubs are absorbing and using the water and nutrients.
You can amend the soil or add additional soil to help the condition of your soil, but these roots will continue to grow.
Digging up or trying to replace the soil could harm or eventually kill the trees or shrubs.
If you are looking to plant in this area you could choose a ground cover.
Here are some links that will help you.