Not so sure criminal makes more noise than you in bed! (9)

I believe the answer is:

outsnores

I'm a little stuck... Click here to teach me more about this clue!

'not so sure criminal makes more' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'noise than you in bed' is the wordplay.
I cannot really see how this works, but
'noise' could be 'snore' (snore is a kind of noise) and 'snore' is located in the answer.
'you' could be 'u' (commonly used in online communication) and 'u' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.