I haven't the slightest idea of how to use this software, and there's Nobody to turn to!

Help with how to set English for all websites using Opera, including YouTube. Help, please.

@titanilla22 What confused me with your post is that you said Voices are not available. But if I start to speak my language, I do have a voice. People with no voice are usually considerably challenged, such that special arrangements need to be created for them. Perhaps you could have said:
"At this time, the only speech that may be understood should be in English."
"At this time" indicates that you are aware of the problem and hope to fix it the future.