You can not shift the responsibility to God, hold Him responsible nor can you expect Him to atone your Sins, as it were, as in some other Religions.
In Indian Philosophy , Free Will Vs Determinism is dealt with exhaustively.
While it is true that , being a Part of Brahman, The Reality,our individual Self , is not affected by our actions,we are responsible for our action at the Empirical level when and if we do not perform an Action as a Non Action,if we are driven by only our senses.
Such actions beget results , the remnants of the Impressions or the Vaasanas linger and they condition our development.
As Krishna declares in the 14th Chapter of The Bhagavad Gita, Sathva Guna is the result of previous Vaasanas or Impressions, though,
‘There may be innumerable Forms and beings , living and non living;yet Prakriti, Nature is The Mother and I am The Father , The Seed”
(Bhagavad Gita Chapter 14.4)
Ramana Maharishi and Paramahamsa Yogananda
This Sathva drives a Man for Yoga Sadhana.
As I have been mentioning on various occasions, Yoga is not an exercise that can be mastered in 30 days or following some lectures;it is life long spiritual practice.
It takes in most cases, more than a Life time.
If one were to die before attaining Yoga in that birth, he is born , in the next birth, in a Family of Devotional disposition which helps him to continue his attempts at Yoga, thus rendering the attainment of Yoga faster in the present Birth.
( for who question the theory of Rebirth, I shall be posting an Article on this)
Their fore,the dispositions must be there, , the continuous practice must be undertaken.
Then Yoga is achieved faster.
The next is a step less than this.
In some cases, every thing mentioned above might have been followed, yet the Siddhi does not materialize.
The reason is that the Yoga has not been practiced correctly and remnants of Impressions linger.
In such cases , the practitioner attains partial success as the Siddhas.
They have no doubt attained Yoga Siddhi, though of a Lower Order.
This the reason why some Yogis are reborn.
Please read my post” Why some Yogis are reborn?
This level is an average level (Madhyam)