Thank you all very much for the replies and suggestions.
I will try to talk to my supervisor next week. I am currently mostly learning theories, which I am not interested in. I am much more into experimental. I hope it will be better when experiments become my focus. For the courses, I think I...
I am really confused about myself now. I originally come from a poor Asian country. I am currently in the first year of a Phd program in Experimental condensed matter physics in an university ranked within top 20 in Europe. But I found the topic that I am studying quite difficult and the courses...