Is there a true Welsh way to express apology, or is there only this Anglicism?
Yes and we introduce it later because it's a little complicated. We say 'I have sorrow', in South Wales 'Mae'n flin gyda fi', in North Wales 'Mae'n ddrwg gen i'.
There are a few, based on where you live in Wales - sori, mae'n flin gen i, dwi'n ymddiheirio
could you say Sori dw i to say I am sorry or is dw i only for names and introductions?