set normal map texture to HDRP/Lit Material

the normalmap of the model is downloading on server.
i dont have a chance to convert it’s texture type to “NormalMap”.

in unity3D it works on StandartShader.
but when i try to do the same thing on doesnt work right.
when i set the normal map to HDRP/Lit material’s normalMap slot , unity doesnt convert it to Normal Map.

 Texture2D normalTexture = new Texture2D(source.width, source.height, TextureFormat.DXT5Crunched, true, false);
mat.SetTexture("_BaseColorMap", MainTexture);
mat.SetTexture("_NormalMap", NormalTexture);

Unity 2020.2.1f1

URP has the same issue for me.