Unity - UI - Raw Image with Texture becomes Smaller after Build

I am a beginner in the game development world, I have just one quick problem with the UI, as you can see during the Unity Player, the UI (Raw Image w/ Texture) is normal in size but when I build my game to APK or EXE and run it, the UI is small. Why is this happening and how to fix it?

• Curious, why are you using RawImage components here instead of UI Image components with sprites? The latter will tend to have better performance due to batching. – DMGregory Jul 10 '18 at 11:11
• DMGregory is right. Also, use the anchor to adjust with every UI size. – Saad Anees Jul 10 '18 at 11:17

When placing UI-Elements, by default, Unity puts them into pixel-fixed positions rather than relative-positions. To fix that set the Ui Scale Mode on the Canvas holding all your UI-Elements to Scale With Screen Size, as detailed in this answer on Unity Answers.