Hmmm.... that would be Libertarian Free Will which is
"the ability to make choices without any prior prejudice, inclination, or disposition. For the will to be free it must act from a posture of neutrality, with absolutely no bias. It determines its own volitions; so as not to be dependent, in its determinations, on any cause without itself, nor determined by anything prior to its own acts."
The empirical evidence proves
"an unhindered ability to make a free decision for Christ" to be false as children have a strong tendency to follow the religious beliefs of their parents. See
https://www.pewresearch.org/religion/2020/09/10/shared-beliefs-between-parents-and-teens/
Your definition contradicts:
John 6:44 "No one can come to Me unless the Father who sent Me draws him; and I will raise him up on the last day.” This verse literally says that no one has the ability, in and of themselves, to cause themselves to believe in Christ which contradicts your definition. This one verse denies free will in the libertarian sense and is sufficient grounds l to reject this idea.
Romans 8:7-8 Because the mind set on the flesh is hostile toward God; for it does not subject itself to the law of God, for it is not even able to do so, and those who are in the flesh cannot please God.
There are 50+ verses saying our ability to decide to believe in Christ is hindered which invalidates your statement.
1 Corinthians 2:14 Job 14:4 Psalm 58:3 Romans 7:18
I'll give you props for standing up for what you believe and taking time to confirm your beliefs in your mind ... I've said my peace.