Sentence 2 would sound more colloquial if you said "he's a remarkably fast runner for his age," although there's nothing wrong with "given."
Sentence 3 is slightly incorrect if you want to use the words in both sets of parentheses, in which case it should be "It's not that I don't like the film, but that I don't have time." If you kept the beginning the same, you're more likely to hear "not that I don't like the film, I just don't have time for it."
Sentence 4 is correct. It would sound more colloquial if you replaced 'in that' with 'because,' but again there's nothing wrong with saying it like you have it.
(not a teacher, just a language lover)
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