"How can I reduce triangles count of the model ???"
"And I don't want to download models with small triangles count"
I am confused, it seems you want to reduce the triangle count withought having to reduce the triangle count? Did I understand you correcly? If so I am afraid that is impossible... If you want to reduce the number of polygons, then you will have to use less polygons. If you dont want to use less polygons, then you cant reduce the amount polygons.
Oh and by the way, when you apply the tool smooth/soften edges in your modeler you actually create more polygons (lots more), it is not recommended.
