YOU SAID:

へたですから、試合（）出られません。

INTO JAPANESE

へたですから、試合（）出られません。

BACK INTO ENGLISH

Because I'm bad, I can't play in the match ().

INTO JAPANESE

下手なので試合に出場できません（）。

BACK INTO ENGLISH

I'm not good enough so I can't play in the match.

INTO JAPANESE

僕は実力が足りないので試合に出場できません。

BACK INTO ENGLISH

I can't play in the match because I'm not good enough.

INTO JAPANESE

実力が足りないので試合に出場できません。

BACK INTO ENGLISH

I can't participate in the match because I don't have enough skill.

INTO JAPANESE

実力が足りないので試合に参加できません。

BACK INTO ENGLISH

I can't participate in the match because I don't have enough skill.