I suggest you choose Japanese: on the one hand, the pronunciation of Japanese is relatively simple, and we can almost pronounce similar sounds in Chinese, but many trills in Russian can't be pronounced, so it's not very authentic, and the grammatical part of Russian is more complicated than Japanese. Moreover, if we consider the use after graduation, there are many Japanese companies and few Russian companies, so Japanese will be very practical in the future and we can't learn it for nothing. If you study hard, you will definitely add more chips to your work in the future.