If you're talking about replacing things like the charging port then yes, that can be done. The parts I'd be looking at would be what's called the auxiliary or daughter board that the USB port is mounted on, plus there's an interconnect cable that provides the connection between the motherboard and the daughter card. The following guide should give you all the information you would need to replace either or both parts.
[link|https://www.nadiemellamagallina.com/en/manuales/smartphones-1/huawei-50/huawei-p-smart-2019-970/placa-auxiliar-8526|Manuales / Huawei P Smart (2019) / Auxiliary plate - Nadie Me Llama Gallina]
If you're talking about something like the power management chip, that's an entirely different subject. Replacing components like that mounted on the motherboard requires microsoldering expertise and equipment that is pretty far outside the skill set of most DIY-ers.
If I've missed something or misunderstood what you're trying to do, feel free get back to me in the comments and clarify what your goal is.