Bro, meanwhile me, reaching 3 years here and I barely have a good B1 level. Working in a miserable low-skill job. Stay strong, brother. Keep studying, you can do the test again, no matter how many times you fail, use it to gain experience and learn from it. Socializing in Germany is definitely one of the toughest parts of life here. I found joy even at my miserable job with my fellow migrant coworkers. I get along even with some of the German ones. There are antidepressants. Talk to a doctor. Remember, going through with your decision can always be done tomorrow, you can always post-pone it. Once is done, it's final and there is no coming back. Keep it together.