Where can I buy a Polygon chain MATIC?

Could you please enlighten me on where exactly I could purchase Polygon chain MATIC? I've been hearing a lot about its potential and am keen on investing in it, but I'm not quite sure where to start. Are there any specific exchanges or platforms that you would recommend for buying MATIC? Is there a certain process or set of steps that I should follow to ensure a smooth and secure purchase? Your insights would be greatly appreciated.