What common mistake do developers make with Request lifecycle, why does the mistake cause problems, and what is the safer approach?

What common mistake do developers make with Request lifecycle, why does the mistake cause problems, and what is the safer approach? One recurring problem with request lifecycle is applying it without understanding the boundary it protects. Treating Laravel as only a template engine instead of an application framework with routing, HTTP, database and service-layer capabilities. In addition, A web request enters Laravel through the application entry point, passes through bootstrap and middleware layers, reaches routing and application logic, and eventually produces a response. Safer engineering approach: keep the responsibility in the correct layer, use the framework's supported API, validate and authorize inputs, avoid hidden side effects, and verify the behavior with tests.