I already gave my best, and I have no regrets at all!

我已经尽了全力，我没有什么后悔的！

youdao

If I can get your answer, at least I will have no regrets later when recalling all of these.

如果我能知道这个原因至少以后再回想起来不会有什么遗憾了。

youdao

I have no doubts that I gave my all to my Representatives, and I have no regrets in working at that company.

我从不怀疑我对我的代理所付出的一切，我也不会对在这间公司工作感到后悔。

youdao