What is the experience of speaking Mandarin with Fujian people?

At best, I can't make it clear when I have something to say, but I can't understand it. It's no big problem. Anyway, we can't have a regional black mentality. It is said that Fujian people can't speak Mandarin well. Every place has its regional characteristics, especially the language is a representative of a place. The existence of each language has its own value and significance, which cannot be a reason for verbal attacks. Now that Mandarin is so popular, many people are also receiving higher education. Few people can't speak Mandarin, but the older generation can't. Maybe they speak Mandarin with a hometown accent and need brains to recognize it, but that doesn't mean they can't speak it.