Making a mesh transparent or decreasing opacity so objects inside will be visible

Question

Made a Fire mesh in blender

But I wanted to make it transparent so that the inside object can be seen

But I tried all possible ways to make it transparent

There are certain tutorials to add transparencey but the version is totally different There is no transparent option in Blender 2.8+

https://blender.stackexchange.com/questions/134368/opacity-of-an-object-in-2-8

Tried the method mentioned in this thread as well but its no use

Is there any way where we can decrease the opacity of mesh/object in the latest version of blender ??

Attached blender object (dropbox) please have a look

Opacity of an object in 2.8

https://www.dropbox.com/s/2mdki8ell8saf2q/firefix2%20-%20Copy.blend?dl=0

Answer 1

Change your blend mode to "alpha blend" and you will get:

I unplugged the fac of your mix shader so you can slide the fac and see what happens.