Atman(solo soul) is also ignorance, Only Param atma(Super soul) is real and called Kshetragya or Dehi or Purush.
Kshetrajna (Devnagari: क्षेत्रज्ञ/Purush/conciousness) means the One who knows of the body, soul, spirituality, conscious principle in the corporeal frame while everything else is Kshetra(or Prakriti)
https://en.wikipedia.org/wiki/Kshetrajna
The Kshetra or the field refers to the body which is material,
mutable, transitory and perishable, the Kshetrajna refers to the
conscious knower of the body who is of the same essence as Knowledge,
immutable, eternal and imperishable, the knower of the body is the
soul residing in the body. Kshetra is Prakrti or matter which is
insentient, and the knower of the Kshetra is the Purusha who is
sentient. True knowledge is knowing and understanding both these two
factors, the insentient and sentient. The knowledge of Prakrti only,
is called the Apara Vidya or Lower knowledge, and that pertaining to
the Purusha is called the Para Vidya or Higher knowledge. in the
Bhagavad Gita, Arjuna is told that the distinctive nature of God is
eight-fold constituted by the five primordial elements, mind,
intellect and the ego-sense, but that is the lower nature which is
inferior, impure, troublesome, whose essence is bondage; the higher
nature, which is the pure essential nature of God, is the higher
living being, the Kshetrajna, the field-knower, the cause leading to
the assumption of vital force by which the world is penetrated and
upheld
God is 8 fold:-
5) elements(earth+water+fire+air+space)
6) Sun(intellect)
7) Moon(mind)
8) Consciousness(or Purush or Dehi)
or the 8 grahas in Hindu astrology(where 9th planet ketu(or dragon tail) is not a planet but a shadow)
Ahamkaar of body(ego) or Atman is ignorance born out of Aham(I) when Dehi/Kshetragya identifies himself with body or some limited self is the one that changes body after death
https://en.wikipedia.org/wiki/Para_Vidya
Vedanta affirms that those who gain the knowledge of the Self attain kaivalya, they become liberated, they become Brahman. Kaivalya is highest state of moksha
I-i-15-17. Hanuman: Rama, sages speak differently: some say there is
only one kind of liberation. Others say it can be got by worshipping
your name and by the Taraka mantra at Kashi. Others speak of
Sankhya-Yoga and Bhakti-Yoga, the enquiry into Vedanta-Vakyas etc.
I-i-18-23. Rama: Liberation is of four kinds: Salokya, Sameepya, Sayuja, Sarupya etc. But the
only real type is Kaivalya and permanent, rest all are temporary
Hence Vedanta focuses on self enquiry and self realization and not worshipping as worshipping means daulity but reality is non-dual as per Kaivalya Moksha
Saunaka, having asked – कस्मिन्नु भगवो विज्ञाते सर्वमिदं विज्ञातं
भवतीति (" Revered Sir, what is that by the knowing of which all this
becomes known? "), - was told by Angiras that –
द्वे विद्ये वेदितव्ये इति ह् स्म यद्ब्रह्मविदो वदन्ति परा चैवापरा च |
तत्रापरा ऋग्वेदो यजुर्वेदः सामवेदोऽथर्ववेदः शिक्षा कल्पो व्याकरणं
निरुक्तं छन्दो ज्योतिषमिति | अथ परा यया तदक्षरमधिग्म्यते || -
(Mundaka
Upanishad I.i.3-5) there were two different kinds of knowledge to be
acquired – 'the higher knowledge' or Para Vidya (Sanskrit: परा विद्या
)and 'the lower knowledge' or Apara Vidya. The lower knowledge
consists of all textual knowledge - the four Vedas, the science of
pronunciation etc., the code of rituals, grammar, etymology, metre and
astrology. The higher knowledge is by which the immutable and the
imperishable Atman is realized, which knowledge brings about the
direct realization of the Supreme Reality, the source of All. The
knowledge of the Atman is very subtle; it cannot be obtained out of
one’s own effort; the Atman cannot be intuitively apprehended by mere
intellectual equipments. Thus, Angiras draws the distinction between
the way of knowledge and the way of realization, as between opinion
and truth. For understanding this for realizing the Reality the
aspirant must seek a teacher. The teacher who has already realized his
identity with the Atman alone can impart this much sought-after wisdom
on the strength of his own experiences
A human being is blessed with the faculty of self-knowledge which is
Apara Vidya or logical reasoning and also with the faculty of
understanding and self-awareness which is Para Vidya or quantum logic.
Para Vidya is defined as the intuitive vision of non-duality;[5] it is
the transcendental knowledge which is beyond all limits of knowledge,
experience and reason, which is, beyond intellect, mind and sense. The
Absolute, which is Truth, which is Reality, is neither an expression
nor a reflection of itself; it is non-dual being devoid of otherness,
and it cannot be an object of knowledge in the ordinary sense as it
surpasses the intellect in subtleness. Knowledge is truth and truth is
correspondence of an apprehension with its object. It is the intellect
which moves within the sphere of duality resulting in delusion, wrong
identification etc. Para Vidya is the intuitive level of vidya that
stems from a unity, and manifests as a vision, manifests as an
experience.
The vision of the Nirguna Brahman is gained through Para Vidya, it is
the highest of all knowledge
> The method of self-realization involves sravana , manana and
nididhyasana , and not rituals.
Note: Study about https://en.wikipedia.org/wiki/Ramana_Maharshi for understanding Kaivalya Vedanta further