When can we use UpperCamelCase and LowerCammelCase?

Question

With your experience when do you use each one.

Answer 1

Me personally, I use lowerCamelCase with all of my naming (functions, classes, variables, etc).

This is because of me being used to it, and it personally being a more visually appealing organization tactic.

Answer 2

It’s more of a convention that something else if you code alone it’s not really a necessity to use one or the other if any