How can I transparent mesh with texture UV map

Hello everyone,

In the image below, I expect the mesh to be transparent with the numbers but it does not happen, where do I make a mistake? My aim is to have a completely transparent image where the black part of the second uv comes from, but as I said, only the numbers are transparent now.

The part shown in the red square was supposed to be completely transparent. Thus, the numbers would be as if they came from an unknown source. When I reduce the alpha of the green color in the albedo to zero, the entire mesh becomes transparent. I tried fade rendering mode.

Thank you

I solved my problem. Unity gets the alpha from the first map. My gradient texture is jpeg and attached to the second map. The problem was solved when I took it to the first map and converted the format to png.