the thing is

Phrase

colloquial idiomatic

(idiomatic, colloquial) Used to introduce the main point or issue.

Japanese Meaning

実は / 要は / 本題は

I wanted to join the team, but the thing is, I don't have enough free time to commit.

チームに参加したかったのですが、肝心なのは参加するのに十分な自由時間がないことです。

Sense（1）

(idiomatic, colloquial) Used to introduce the main point or issue.

I'd like to come, but the thing is, I just can't afford it.