事情があって

for personal reasons

→ 事情
phrase Rare #32,645
for personal reasons Used to give a vague explanation without revealing the specific circumstances. It can also mean “because of certain circumstances” or “due to circumstances.”
JA: 事情があって、今日は早く帰ります。
EN: For personal reasons, I'm going home early today.

ちょっと事情があって

It’s just that something came up.

— 天気の子 (2019)

事情があって私にはそれ以上は言えません

For certain reasons, I can’t say anything more.

私は事情があってお手伝いできませんでした

I wasn't able to help due to personal circumstances.