How to create a semi-transparent cloudy texture?

Question

Graphic arts

How do I create a semi-transparent texture with cloudiness? I know that you can adjust the alpha channel, but I don't understand how to make the image behind blurry.
How it should be

How it is now

Answer 1

This effect is called blur (Gaussian Blur is used quite often)
For UI, there are several variations of shaders. Mobile phones get warm from it and artifacts were noticed on some versions of the iphone.
https://forum.unity.com/threads/solved-dynamic-blu...
In general, if the backdrop does not move under the UI, it's better to bake (in the same runtime) the backdrop into a RAW texture and place it already, instead of recalculating the blur every frame.