In the English speaking world, there are many accents. It drives Siri, Alexa, and Google Assistant nuts or, at least, they are happy to ignore them completely. It is partially because they can’t understand them.
Even though I watch a lot of British shows, especially detective shows on Masterpiece Theater, some of the accents in England could almost be a different language than English. Here is a video that takes you on an accent tour of the UK.