Whats the use of"form" element? in HTML

I cant figure out why I should use the “form” element. What would I lose if I don’t

Form element is typically used to send data to backend. It also, allow you to group all kind of related information you want to send. Think of it as container and messenger for backend.

I’m slightly baffled as to where the confusion comes in here. What element would you use for a form?