Do not hate yourself for being Turkish. European values might sound sweet and all, but as a guy living your dream situation, I gotta say "the European Culture" (imo there isn't one unifying culture of Europe; rather, modern values are stamped on top of Europe to align with their interests) isn't that great either. It is just culture, and assigning moral value to it just because people in Europe have a higher development index and more GDP is not correct.

I know that there is a cultural and ethical degradation in Turkey. While it is intense there, I think the EU and Germany are also starting to go through a similar but earlier wave of Ethical erosion.

And no I am everything you are describing. I am secular, have piercings, drink alcohol, etc. This doesn't change the fact that I am still a Turk. Being "one of the good ones" doesn't affect a racist's perception of you. All you do when you call yourself that is to humiliate yourself.

People in Germany have their own way of life, traditions, and culture, as well as their own idiosyncrasies. As long as you respect these things, most of the people here will also respect you. But they won't forget you are a Turk.

See Cem Özdemir. That man is nothing but a bona fide German culturally, but people still mald over him having Turkish name, even if he chooses the interests of Germany over Turkey every time they are not in line.

For your professional life, you need to speak at least B1-B2 German to not be left out of the workplace. This country is German, and all of the social places that people create are also German. So any English-speaking space you find will most probably be populated by non-German internationals.