@Duarte, Itzel Thank you for reaching out to Microsoft Q&A, apologize for the inconvenience caused on this. Could you please run the Webapp
Down detector of your app under the diagnose and solve problems to identify the cause.
If you observe that there were any high memory /CPU utilization, then it is expected that deployment will fail since the resources are being exhausted in that case try scaling the app service plan to next tier and retry the deployment and let us know if you still faces the issue.
Feel free to reach back to me if you have any questions on this.