The file size part: "Check the file size" becomes Validate the size. "Affect your phone’s storage space" can be impact your phone's' memory.

"Search" replaced with Search, "YouTube Music" is proper noun. "click" replaced as before. "download button" same as before. "choose" replaced, "ringtone option" same, "download it for free" same.

Finally, review the entire transformed text to ensure all substitutions are correctly applied and the meaning remains intact. Avoid using the same synonym for different parts of speech unless necessary. For instance, "download" is a verb, so its synonyms should also be verbs, but in the output it's in Download format. So need to make sure the parts of speech match.

"Search for the song on YouTube Music and click on the download button. You can choose the ringtone option and download it for free."

Wait, looking back at the original problem's text, the YouTube section says "YouTube Converter". The user's answer replaces both parts with variants. The user's instruction says to skip proper nouns, but "YouTube Converter" is not a proper noun; rather, "YouTube" is a proper noun, and "Converter" is a common noun. So perhaps "Converter" can be replaced with synonyms. Therefore, "YouTube Converter" becomes Online Streaming Platform Downloader. But the user's example uses Streaming Site Converter. So maybe they treat "Converter" as part of the term. This is a bit confusing, but since the example shows that, I'll proceed to follow the same approach.