@Carlos-Andrés-Lara-López, good question @Mike. @Carlos-Andrés-Lara-López , what are you saying to Alexa, and what is Alexa saying back to you?
Also, are you using the newer "Smart Home" skill that creates a smart home device for each command?
If not, please switch to that skill. It recognizes your words much better because Alexa has a list of your commands ahead of time and only has to match what you said to one of them.