Can I say 'problems with downloading"?

[Twilit1988]

1 : "If I knew that you would scold me I would never have done like that". correct?

2 : "If you kill me the terrorism will end". correct?

3 : "I face some problems with downloading this game" correct?

4 : "I don't feel good in answering of this question of you". correct?

[Kitosdad]

1 : "If I had known that you would scold me, I would never have done that". correct
2 : "If you kill me, will the terrorism end".? correct?

3 : "I faced some problems when downloading this game" correct?

4 : "I don't feel good answering this question. ". correct?
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Englishman living in Germany.

[Volcano1985]