Quotes with my username in post #4 regarding setting default sink in PipeWire are not very helpful here when OP only has one sink available in PulseAudio
See also previous posts regarding audio issues with Matebook D15
I installed kernel version 5.17 but Huawei Matebook d15 sound card is not recognized - #46 by nikgnomic
My Huawei D15 don't sound at all. Comet Lake PCH-LP cAVS - #2 by nikgnomic
But reports to sofproject are probably relevant for Intel based laptops only
AMD systems usually require an Audio Co-Processor driver
all I can find relating to audio support for AMD Matebook system is this bug report: