There was a way for me to pursue a career as a musician while at university but I didn't take the opportunity(chance)
I could have tried to become a musician while studying at university but I didn't take that opportunity(chance)
「大学に行きながら音楽家を目指す方法もあったが、そうしなかった。」= There was a way for me to pursue a career as a musician while at university but I didn't take the opportunity(chance) / I could have tried to become a musician while studying at university but I didn't take that opportunity(chance)
ボキャブラリー
a way = 方法
pursue = 目指す
career = キャリア
musician = 音楽家
while = ~の間、~をしながら
university = 大学
try to become = なろうとする
take the opportunity = チャンス、機会を生かす