Hi @Vamsi Hari,
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
Yep, the Azure Portal UI has changed recently, and the "Function f(x)" option is no longer in the left-hand menu. Now, you can find Functions in the "Overview" section of the Azure Portal.
The Portal only supports creating functions with scripting languages like JavaScript, Python, and PowerShell. If you want to create a compiled function, you'll need to use a development environment like Visual Studio or Visual Studio Code to create and deploy it.
For you reference please have a look on this Document which helps you in better understanding and solve your concern.
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