I always lose like 70% of the bets during the International break ...
Those games are not that competitive and lacks consistency making it hard to predict so if I were you I'd rather abstain from gambling all together during this period.
I'll second that I usually refrain from playing in games especially during the breaks, as the results are always surprising. It's pertinent to note that many players request not to be selected or don't play with much intensity as they want to report fit for the club. I also believe that during these games players are less focused look at Spain or Germany players, for these very reasons it's my advice to avoid playing on these matches.