Peace lady fatima,
Every Muslim I have dialogued with and know, do not believe Jesus was crucufied, some believe it was Simeon, or Judas, or the He swooned on the cross.If either of those are true, and since we know the Quran even admits Jesus was sinless, the if He allowed another to be crucified in His place, and allowed the story of His crucifixtion to be told as His disciples told it and died as a result of their testimony.Then He would have been part of a massive deception, and allowed lies to be told, which would make Him a sinner?!
I'll get into this in more detail later as time permits.
Peace and God bless you and yours always
ILJ/Y