I do not see anything bad in your reports. From my previous experience, this is router problem. You probably didn't restore it to factory setting right way.
And one more thing.
When I use incognito window, yahoo says " Web page not available". And youtube is working now. But can't login on youtube. And gmail shows "Web page not avaiable". Maybe this has to do something with youtube signin in.
I do not know what to tell you, there is no presence of malware on your system. What you need to do is to correctly reset your router to factory settings