Sometimes, the Communion wine tastes like blood, but not always. Is that because the Priest messed something up?

I don’t understand why the majority thinks wine tastes good. Do the people that love it, drink it with the same mentality, as someone drinking a soda? I mean it doesnt even taste like grapes anymore, just bitter liquid. Champagne is how all wines should taste like…alcoholic grape juice. I can understand beer tasting the way it does, but not wine. Actually the only wine I like and would drink tons of is Ice Wine. Now thats how i always imagined wine to taste like…or even 50% ice wine, 50% regular. Even hard cider still tastes like apple juice. Is it actually sweet for normal people, and maybe I just have too much of a sweet tooth for it to register? It doesn’t even look like people like drinking it at a restaurant. I only see people sipping it.