Don't make it so rigid (or inflexible), leave some leeway.

留点回旋余地，别把话说死了。

youdao

Practice heart world weathered, changes in temperature, all words, leave some leeway, know well, happy, bitter, cicadas.

世事风霜，冷暖练心，一切言语，留几分余地，知恩，知足，知苦，知了。

youdao

I hope you would leave us some leeway in terms of payment.

我希望在付款条件方面你们能通融一些。

youdao

"While pressuring it, the international community should also leave some leeway for negotiations and create conditions for dialogues, " Prof Yu tells Global Times.

BBC: China media: North Korea sanctions