3D modeling using blocks (minecraft style) snap is important which softare?

Hi, it's a complicated question to do, but it's really easy in substance.

I want to 3D model objects using 3d blocks
well exactly I want to make an assets of 3D objects to use like a cube module, so maybe a sphere but always inside a 3d cube

Well, not easy to explain, let's take a cube o 1m / 1m
and a sphere of 1m /1m
and a cone 1m / 1m
and a piramid 1m / 1m
(oky maybe now is better)

And I want to use them all to build a 3d model
adding piece by piece to (a sort of minecraft / lego way)

But which software can I use?
I tryied blender but is not so user friendly and the snap tool is muddled
I'll try sketchup too, but sketchap is way too simple, and I can't ad detail later

any advice?

Blender unfortunately is your best bet for free. You can add significant detail in sketchup, but you will have to be diligent in learning it.While yes, not too beginner friendly, Blender is extremely powerful once you get the hang of it. Watch tutorials on youtube, such as in this list here: https://www.youtube.com/...r+tutorial

As with all 3D modelling programs, practice is important.