The problem is that there are certain rules of confrontation that more experience players use to great effect, but aren't obvious to novice players they're paired with. Knowing when to challenge snipers is one example (not peeking twice or at all for instance). When to disengage a firefight and escape. How to keep distance with shotgun rushers etc. It's like playing chess but not being told the rules and how the pieces move. Sbmm only works to improve gameplay if they know what they are doing wrong and can improve on it.