Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl/STM32WL5x_CM0P/PWR/SR1#0x0
Power status register 1
Wakeup flag 1
Wakeup flag 2
Wakeup flag 3
Wakeup PVD flag
Radio BUSY wakeup flag
PU2 Hold interrupt flag
Internal wakeup interrupt flag
https://github.com/modm-io/cmsis-svd-stm32