My ambition from a young age was to fly in the military and either make a long career of it - or leave for a second career in the airlines after a 'good stint'.
The implication here is that you think an airline career is second best. It isn't. It's just different.
The OASC experience tells you that you are not suited to military flying. It does not by itself indicate you are unsuited to flying generally.
Given you have tried the military in a ground role and it has not satisfied you, your motivation to fly exceeds your motivation to succeed in the military.
So you have simply arrived at the start of your "second career" much earlier and by a different route than you intended, that's all. That could be to your advantage in a possible future airline career dominated by seniority issues.
Commit to that CPL and catch the next airline recruitment window.