Unnatural fear is the result of a demonic spirit. Trauma of some kind, or being influenced by a person full of fear, can open the door to be oppressed or possessed by a spirit of fear.
If you have uncontrollable fear crippling your life you can be set free in the name of Jesus. Jesus came to set you free!
“The Spirit of the Lord is upon Me, because He has anointed Me to preach the gospel to the poor; He has sent Me to heal the broken-hearted, to preach deliverance to the captives and recovery of sight to the blind, to set at liberty those who are oppressed; Luke 4:18 MEV
Remember, God is Love.
There is no fear in love, but perfect love casts out fear, because fear has to do with punishment. Whoever fears is not perfect in love. 1 John 4:18 MEV
Therefore if the Son sets you free, you shall be free indeed. John 8:36 MEV