Underperforming against xG

[Tommod]

Hi everyone,

 

 this might’ve already been answered, but I couldn’t find anything. My wolves team started like a train and was unbeaten until Boxing Day. In the next 8 games, I’ve picked up 2 points, but have consistently had a higher xG than my opponents. It’s working both ways, conceded 7 more than xG against, scored 3 less. 
 

Should I look at my tactics (but I’m not conceding big chances and am creating them, so I feel we should be ok tactically) training (I’ve never really done my own training but could learn) or is it just an unlucky run that I need to play through?

 Thanks in advance.