to do something without other people

独自做;(离开团体)单飞

He's decided to leave the band and go it alone as a singer.

他已经决定离开乐队，单飞去做一名歌手。

Now that I have enough experience, I've decided to go it alone and start my own business.

既然我已经有足够的经验，我决定一个人开创自己的事业。