Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32c0/STM32C011/TIM3/TIM3_CNT_alternate#0x0
TIM3 counter [alternate]
counter value
UIF Copy This bit is a read-only copy of the UIF bit of the TIMx_ISR register
https://github.com/modm-io/cmsis-svd-stm32