How can I make sugar-free sangria? [closed]

Sangria doesn't have "fizzy pop" of any description in it.

It has brandy.
That was where it went wrong, long before the sweetener stage.

Sugar of any description is optional, though personally I'd rather stick my head in a fire than put artificial sweeteners in it, I'd just rather it without anything.

Rioja - Tempranillo, Garnacha etc
Brandy
Fruit

You can adjust the sweetness by modifying the fruit mixture if you don't want to add sucrose; though the difference between fructose & sucrose is almost indiscernible 'health'-wise.

Many people have already suggested making your Sangria the more traditional way by just adding pieces of fruit rather than concentrated fruit juices— depending on why you are attempting to eliminate the sugars (e.g. for health reasons) this might be the best approach. Another option might be to zest some fruits or use a potato peeler to take long strips of peel with no pith and marinate those in the wine— this would give you the fruit flavour without the added sweetness. If you’re partial to including tonic you could use seltzer water instead. I’d also suggest using stevia to sweeten as needed, but take a sample, test that and then sweeten the sample as needed— attempting to get the whole pitcher right feel like it’d be a bit of a gamble.

IF avoiding sugars. I would avoid Wine altogether as it contains sugar naturally. Otherwise, you would probably be better off just creating real Sangria.

One option, if you absolutely need an "non-sugar" option, would be to mix the wine with a fruity juice that is sugar-free. Also, not all wines are going to mix well, I would try to get a basic table red wine. Merlot and Cabernet Sauvignons would both probably be much too strong for what you want to create.

Cheers.