甲斐がない/甲斐(も)なく => it's not worth one's efforts to do something N2
結局 => after all; eventually; in the end ~ N3
その結果 => as a result of; after ~ N3
甲斐がある => It’s worth one’s efforts to do something N2
その[結果「けっか」] => Because of A (in the past), B N3
Reason, Result, Response