In the garden, what does God say is 'not good' for the man to be?

'It is not good for the man to be alone. I will make a helper suitable for him.' Companionship is named as part of creation's design from the very beginning, before sin ever enters the story.

Genesis 2:18 · BSB

“The LORD God also said, “It is not good for the man to be alone. I will make for him a suitable helper.””