Not a teacher
I guess both "go to bed" [STRIKE]&[/STRIKE] and "go to sleep" are fine. I [STRIKE]always[/STRIKE] use both to tell my kids to sleep on their bamboo beds.
Welcome to the forum. :hi:
Please note that I have added "Not a teacher" to your post. It's great that you want to help learners but you have to make it clear in your response that you're not a teacher. You can create a signature line to show that (you might not be able to create a signature line until you've made ten public posts) instead of having to write it at the start of every response.
Why do you need to "guess" that they're both right. Your profile says you're a native English speaker so I would expect you to have a clear idea of what's natural and what isn't in your variant of English.
I'm not sure what the relevance of bamboo beds is.
Also, please check your member profile. It shows your current location as the United States but your IP address comes back to a completely different country. Please ensure all the information in your profile is accurate.