This is a common misconception about Buddhism - that non-attachment leads to Nihilism.
Here's a good overview of how the concepts of "acceptance" and "non-attachment" can be compatible with leading a meaningful and fulfilling life: https://zenstudiespodcast.com/zenacceptance/
Singapore might not be corrupt at the ground level (police, low-level bureaucrats, etc) but any country where the Prime Minister's wife is in charge of the main government investment company should not be considered clean.
The former Prime Minister (Lee Kuan Yew) was in power for 31 years. His son is in power now. People don't hold on to power for that long by playing fair.
Singapore is also known as the Switzerland of the East, not least for the fact that their banks are among the favourite destinations in the region for the proceeds of corruption.
