There is a huge market demand for Azure professionals out there. Which is why many people are learning Azure. So there are a lot of people who know Azure. So if you wish to get a job as an Azure Cloud practitioner then you would have to set yourself apart in some way. One way to do that is to get a certification. A certification allows companies to differentiate between people claiming to know Azure and people who actually know Azure. This is not the only criterion but is a very important one. So having an Azure certification can help you set yourself apart in the eyes of potential recruiters.
If you are planning on learning Azure, as a beginner it would be better to start with an online course that teaches you the basics and gives you hands-on experience.
You can either take this Azure Online Training which will teach you the basics of Azure or if you are just a beginner and wish to get your feet wet you can watch this end-to-end Azure tutorial: