I think it is Lactarius quieticolor. Very edible. Read about it!

Great to hear that, so I can eat it then?? It always charge color from red to blue when I touch it. I heard there is a similar mushroom that is with reddish bottom, but it tastes very bitter, this is not that?

This is no Lactarius but a Boletus. Maybe Neoboletus luridiformis but you have to take a better picture of the stem so its structure can be seen more in detail. Yes, it is still edible.

Hello, here I attached more pictures. What do you think? Are they eatable? When I cut the stem with a knife, the cut surface on the stem is yellow colored, and then quickly changes to blue color.

In the two upper pictures, did you peel off the pipes?
It has become more difficult now but I still say Neoboletus luridiformis.

I think for the two pictures taken in the sink, I peeled off the part which looks like foam. In total there are 5 pictures, the no.1, no.2 and no.5 pictures show the original mushroom. When you cut the stem it is yellow or orange color and then quickly changes to blue and even darker. Is it still edible?

Yes - the problem is that I still cannot clearly see the structure of the stem. Another problem is that it rapidly gets too old. If you want to eat it, do it now!