What firstly come into my mind is the public organizations like museum, theatre and foundation. Frankly the job opportunity in those is very less. I am applying the National Art Gallery, but no response. I start to think that they may not hire the foreigner due to their nature (public). But I am not sure.

So I would like to seek for anyone's advice if it is difficult/not realistic to find a job in art and cultural area in Singapore for a foreigner. Or anyone in this area can share some experience. Should I turn to search for the private companies? If so, I really don't know what they are.
Hope someone can help. Thanks in advance