可能形 => Potential form N4
全く~ない => not at all ~ N3
全然~ない => (not) at all N4
を契機に => as a good opportunity/chance to N2
Expected
を[機「き」]に => Use A as an opportunity N1
Time, Situation
[可能系「かのうけい」] => Can, be able to, be possible to N4
Can, Should, Must
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report
[全「まった」]く~ない => Not A (at all; even a little bit) N3
Not only, Not even
をきっかけに/を契機に => with… as a start; as a result of; taking advantage of N2