I'm going to shock you:

In Germany and Austria being paid per month is the norm. All the laws are defined for that. So pretty much everyone who works gets paid just once a month, that's it (Well, in Austria you get 14 salaries, so you get an extra salary every 6 months). It makes zero difference if you get your money one time a month or half your money two times a month, it's the same amount in the end.

Getting paid more often would just complicate things, as it can depend on how much overtime you did in a month. Or how often you went into the office (you get lessened taxes based on how far the office is away and how often you have to drive there and if there is suitable public transport to get there).