Weird tree lighting issues

Hello!

In the picture below you can see three marked areas.

The first area is near and there are shadows. It looks correct since it's behind the wall. The second area is out of the shadows draw distance. Some leaves appear lighter than the others even though the tree is behind a wall and should be all in the shadow. The third area is entirely in the sunlight and should be light but there is some weird lighting. It doesn't look real at all.

I've tried fixing the normals of the fbx but the problem still persists. I've messed with the directional light intensity, the ambient intensity and both colors. Still the same issue.

I'm using Unity 2021.3.0f1 URP

How can I simulate distance shadows? What is this weird leaves lighting?