A Simple Azure Web API Visual Studio 2019 Solution example

I am a hobbyist programmer but have not kept up with the evolution of programming environments in recent years and I would like some help to get started with an idea of mine. I have a free Azure account and Visual Studio 2019 but I cannot workout how to create a simple Web API solution that takes several input variables from a client call, writes them to an Azure database and returns values to the client. Once I have this basic code and structure then I can progress with my idea to create some software.
If you are a C# programmer, use VS2019 and are familiar with Azure then I need your help :)