Who was forced to carry the cross for Jesus?

Answer: Simon of Cyrene

Along the way the soldiers seized Simon of Cyrene and forced him to carry the cross behind Jesus.

“Along the way they found a man from Cyrene, named Simon, and they forced him to carry the cross of Jesus. As the soldiers led Him away, they seized Simon of Cyrene on his way in from the country, and they put the cross on him to carry behind Jesus.”— Matthew 27:32; Luke 23:26 (BSB)