We had a ceremony every monday morning and friday evening were the whole school divided into each class stood at attention and said a pledge of allegiance followed by the national hymn in Turkey.

This was because we were in a private school where the rules were more relaxed. Public schools did it twice daily.

We do not, and we unironically have a parade about how cool WW1 was.

https://en.wikipedia.org/wiki/Pledge_of_Allegiance is (currently) about the US one, while https://en.wikipedia.org/wiki/Pledge_of_Allegiance_(disambiguation) has a few others.

The "under god" part was only added to it (for anticommunist reasons) in 1954.

In Australia I only remember singing the national anthem at school assemblies about once a week

Def do the national anthem in

Not in Wales (although the UK government has floated the idea of a pledge of allegiance a couple of times). What they did do was make everyone recite the Lord's Prayer. No-one was exempt, not the handful of Muslims, not the sizable portions of atheists, and not me with whatever made up religion I'd claimed I was in this week (I was deep in new atheism and would probably've become a misogynist if I hadn't grown up to be a woman).

In we had the anthem played in class every day.

It was a half-french half-english version, but on Fridays in elementary school we had the fun one that had the acapella quartet doo-wop guys recording.

In high school if you were late to school, you weren't allowed to walk to class while the anthem was playing.

How many countries even have a "Pledge of Allegiance"?

Many countries still do this. Democracies, by the way.

lol most local government meetings (in red counties) still start with the pledge of allegiance AND a prayer

Yeah

Nazi Germany

In one school I did the national anthem and the Lord's prayer every day, when I moved to another school I was a little confused when we didn't do the Lord's prayer but we still sang the national anthem every day

We did the national anthem once in a while here in Canada but no, nothing like your thing

https://no6ody.wordpress.com/2012/01/31/i-pledge-a-mondegreen-to-queen-frag-and-her-mighty-state-of-hysteria/