Because from the name alone this is a friendly match so there is no target they are looking for to win and seem to want other results such as how to see the schemes that are carried out or the players that are played and of course see whether the formation is suitable or not because in short this is just trying to make national team to be better and ready when there is competition.
To be honest, in this case, I have never done this for a gamble because indeed this is also an experiment for several big clubs so it is definitely difficult to predict how victory can be obtained because the focus of several clubs in this case is actually not on winning.
I would say it depends on which players get a chance during friendly games. If there are a lot of routined players then it usually doesn't have the pace as the real games have when something is at stake. But there might be some action when younger players get one of their first or few chances to show what they are able to do, but that can also lead to less predictability as they are emotionally kind of overwhelmed and don't play as well as they would usually do. I would rather go with teams who usually don't have a chance but can win a friendly game because anything else is often not worth the risk that a team out of a sudden literally forgot how to play the game.
The problem in this case comes back to the friendlies again I think. Conditionally maybe what you say could be true but that's only a fraction of the many chances one has in a friendly match.
Players also know that this is friendship so sometimes they don't really do it in the sense that they sometimes don't touch too hard in body fights or when trying to make attacks sometimes they also prefer which one is best and don't push too hard like a match for competition.
Just looking at the OP's case when we examine it, of course we know Morocco in the world cup and what it's like on the other hand Germany is also having problems but they are a big club and compared to their opponents they are much better but of course this also cannot be used as a benchmark for friendly matches because indeed the results sometimes it's not the win they are looking for but something else like i said before.
Personal matters or not then its not really that something that recommendable on making up some bets with the friendly match. Most likely you would really be able to see some draw or even underdog teams would be beating up those high tiered or good ones on which you would really be having that lost bet because you would of course be betting on stronger one but since this isnt an official match then you would expect that
performance or gameplays wouldnt really be the same unlike on a real match which it is really that understandable.This is why i do skip on betting with these matches because results are really that something
you could predict because every team or member would really be just simply playing without having that competitive kind of approach which it would be affecting out their overall performance
and this is something that a very common approach.