Arrival card

As a Cameroonian Singapore is a Visa free we used but arrival card to enter Singapore  my question is that can l look for a job  or work in singapore so l can get work permit while am still inside singapore?

This kind of question comes up quite often - why did you not try to find an answer first, before posting this?

In short: A visa-free entry is different from a residence or work visa and does only allow you to do a tourist visit, nothing more.