creation of buttons and other gui stuffs

am working on a space shooter game. i need to develop the hud. i tried creating a button and applied a texture to it. But the texture doesn't seem to fit the button. No matter what different size the texture is, the texture gets shrinked inside the button. need help how to design the hud.

do people in the industry use this GUI.BUTTON and assign a texture in it or design a separate 3dmodel or images and assign colliders for buttons, layouts,etc. what are the ways to design GUIs.