Hi Sirona. Very good question. Best person to answer this is Krishna Himself. Below are two of His quotes from Bhagavad Gita As It Is.
Chapter 16: The Divine and Demoniac Natures
TEXT 19
tan aham dvisatah kruran
samsaresu naradhaman
ksipamy ajasram asubhan
asurisv eva yonisu
Those who are envious and mischievous, who are the lowest among men, are cast by Me into the ocean of material existence, into various demoniac species of life.
PURPORT
In this verse it is clearly indicated that the placing of a particular individual soul in a particular body is the prerogative of the supreme will. The demoniac person may not agree to accept the supremacy of the Lord, and it is a fact that he may act according to his own whims, but his next birth will depend upon the decision of the Supreme Personality of Godhead and not on himself. In the Srimad-Bhagavatam, Third Canto, it is stated that an individual soul, after his death, is put into the womb of a mother where he gets a particular type of body under the supervision of superior power. Therefore in the material existence we find so many species of life-animals, insects, men, and so on. All are arranged by the superior power. They are not accidental. As for the demoniac, it is clearly said here that they are perpetually put into the wombs of demons, and thus they continue to be envious, the lowest of mankind. Such demoniac species of life are held to be always full of lust, always violent and hateful and always unclean. They are just like so many beasts in a jungle.
Bg 18.67
idaṁ te nātapaskāya
nābhaktāya kadācana
na cāśuśrūṣave vācyaṁ
na ca māṁ yo ’bhyasūyati
This confidential knowledge may never be explained to those who are not austere, or devoted, or engaged in devotional service, nor to one who is envious of Me.
Purport:
Persons who have not undergone the austerities of the religious process, who have never attempted devotional service in Kṛṣṇa consciousness, who have not tended a pure devotee, and especially those who are conscious of Kṛṣṇa only as a historical personality or who are envious of the greatness of Kṛṣṇa should not be told this most confidential part of knowledge. It is, however, sometimes found that even demoniac persons who are envious of Kṛṣṇa, worshiping Kṛṣṇa in a different way, take to the profession of explaining Bhagavad-gītā in a different way to make business, but anyone who desires actually to understand Kṛṣṇa must avoid such commentaries on Bhagavad-gītā. Actually the purpose of Bhagavad-gītā is not understandable to those who are sensuous. Even if one is not sensuous but is strictly following the disciplines enjoined in the Vedic scripture, if he is not a devotee he also cannot understand Kṛṣṇa. And even when one poses himself as a devotee of Kṛṣṇa but is not engaged in Kṛṣṇa conscious activities, he also cannot understand Kṛṣṇa. There are many persons who envy Kṛṣṇa because He has explained in Bhagavad-gītā that He is the Supreme and that nothing is above Him or equal to Him. There are many persons who are envious of Kṛṣṇa. Such persons should not be told of Bhagavad-gītā, for they cannot understand. There is no possibility of faithless persons’ understanding Bhagavad-gītā and Kṛṣṇa. Without understanding Kṛṣṇa from the authority of a pure devotee, one should not try to comment upon Bhagavad-gītā.