Keep tabs on the stats, players conditions during the match, when they start to get low sub them, I try to use 2 subs every game I watch and save 1 incase of injuries, this also applys to players getting booked, if I have a player booked I take him off to reduce the amout of red cards I get!, as for losing the games thats just coincerdence so dont worry about it, it will change. There are plenty of troll results so at times nothing you do makes a difference but all you can do is go by whats happening during that game, if your opponents dominating possesion, shooting etc, then change something like put on another striker if your playing 2, take another look at you formation to see if you can alter it some way to balance the match out a bit!. When your are playing much higher skill teams then most of the time they will have the lions share of possesion even if there not watching and you and a friend are thats just how it goes my friend!. It would certainly do you no harm having as many people watching your game in this case.