, it is not officially authorized and can lead to account-related risks. 1. Official & Authorized Methods

Here’s a clear and helpful write-up for a video titled "Video de cómo bajar videos de YouTube con enlace" (adjusting "90" as likely a typo or regional shorthand — I’ll assume you meant "con link" or simply "de YouTube"):

Downloading videos from YouTube for offline use is a common request, though the methods vary depending on whether you are looking for official support or third-party tools. Official and Safe Methods

Downloading YouTube videos is generally a violation of YouTube's Terms of Service (ToS)

Existen extensiones como "Video DownloadHelper" o "SaveFrom.net Helper". ¿Sirven para 90 videos? . Las extensiones están diseñadas para 1 o 2 videos. Si intentas bajar 90, el navegador se saturará, consumirá toda la RAM y probablemente colapse.

Eso lee el archivo línea por línea y descarga todo.