Asklemmy

In the UK, you generally don't see people flying the Union Jack unless its a major sporting event, or its a major governmental sort of building.

CGP Grey made a YouTube video on proper US state flag design etiquette that I personally agree with. Spoiler alert, most states failed the test.
https://youtu.be/l4w6808wJcU

I'm from Indiana and we're more likely to see our national flag instead of our state flag here, but Indiana isn't known for much anyway.

In Germany, official government buildings will have the flag on or in front of it, usually next to a bunch of other (eu, county, city...).

Private citizens will fly the flag for sports reasons, or in more right-wing communities they'll fly either the official flag or the old black-white-red one from empire times. Most people will look at you funny for flying the flag when no sports or eurovision are/is going on.
There is really very little "neutral" ground here.

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Somewhat common in Brazil, but nowadays the nationalistic far rights are the only ones who fly it

Here in Netherlands, it is tradition fly the flag with a backpack hanged on it when you graduate.

In my country we fly our flag when we win important football matches.

As a Texas resident, I see more Texas flags than USA flags. Texas flags are everywhere here.

Pretty funny that coming from a Norwegian because they still have the flag out many places in my opinion :)
It's actually one of the things that stuck out the most after I had moved there.
Especially at "hytter" (vacation cabins) I think the majority has a flag out.
Same for national day, you'll see a bunch of flags.

Compare that to Belgium, where I'm from. Even on national day it's a rare sight to see a flag.
And it's only very fanatic people that will actually wave it around on the street.

The moment you'll see most flags out is probably during the world cup.

UK here. A UK flag is only flown from govt buildings unless it's some royal event or football but then it's usually the individual national flag such as England, Scotland, Wales, etc

The union flag & the St George cross (Englands flag) were co-opted by the far right in the 70s so flying one outside of the occasions named above had other people mark you as a bit of a nationalist & to be weary of you.

I lived in MD for a few years. The flag is everywhere. You can always tell someone from MD, no matter where you are, because the flag is incorporated into their clothing. I've never seen anything like it from anywhere else.

In Spain it's extremely common to hang the flag on your balcony, especially since the pandemic. It's also quite common to see younger people wearing bracelets of the spanish flag. I'm not really a fan of it but most people don't do it for political reasons, it's just nornalized, so I can't really blame them.