lots of plot holes

Rating: 5/10 (14 December 2017)

Things i don't understand:
1- How can a rebel cruiser destroy first order star destroyer by jumping to light speed.If it is possible than you can destroy all first order fleet by remote controlled ships.
2-How did Finn and Rose made it to the cave after rose saved Finn from death bey crashing him with hear flying motorcycle? I remember they were very far away from the gate of the cave and they did not have any vehicle.
3- How did Snoke did not sense that Kylo Ren was moving the light saber?