Sentence examples for regret not from inspiring English sources

I regret not getting them.

Armstrong expressed regret, not sorrow.

I regret not having taken them.

SP I regret: Not eating more chocolate.

And I regret not writing them down.

What do I regret not doing?

Do you regret not reaching that milestone?

I can't regret not having children.

"I regret not being more straightforward there".

They may regret not paying closer attention.

I regret not trying harder in college.