Based on the given tweet, determine the level of sadness the author is experiencing. Choose from the following options: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.
Tweet: @BTS_twt people have so much negativity filled inside them but im always happy that in such a gloomy world someone like u exists Namjoon
1: low amount of sadness can be inferred