Welcome to the Geohashing community!
I' afraid I don't quite understand your first expedition report. Are you sure you meant 2021-01-03 52 1? Those coordinates are in England, nowhere near "Bänggerspitz". In fact, Google has 0 (zero) results for "Bänggerspitz" currently. Maybe you meant 2021-01-03 48 7, that seems to be near Benkenspitz/Bänggespitz.
Anyway, how did it go? Did you reach the coordinates? Did you take photos? Feel free to add details to the expedition report. --Fippe (talk) 17:14, 3 January 2021 (UTC)