Devotee: Once you explained that anger comes from envy.
Srila Gour Govinda Swami:

kāma eṣa krodha eṣa rajo-guṇa-samudbhavaḥ
mahāśano mahā-pāpmā viddhy enam iha vairiṇam
[Bhagavad-gītā 3.37]

You have material desires, and if they are unfulfilled then anger comes. That anger is born out of rajo-guṇa. Otherwise why would anger come?