Hey people thank you for fast answers, I feel like idiot because I asked question, I visited plugins page and deactivated plugin called Change Uploaded File Permissions and then I tried to upload photo and see if it isvisible. it was visible, no problem with permissions anymore. then I deinstalled plugin, author told me today it is developed long time ago and he is not working on it anymore, so, I concluded it is not compatible with newer version of wordpress.
so, now everything is OK, I will mark topis as resolved, it can stay for the future, if somebody get the same problem like me.
bye and thank you
