That's a long topic. To even start with, Angloamerican law is based on common law, a medieval relic. In which precedents, opinions and so on, determine the outcome. Practically the rest of the world uses civil law, which is much more modern and clear and its less susceptible to opinions.
This is exacerbated by the reactionary past of the US, causing its legal system to be infested with a lot of reactionary and ancient concepts. While also making it easy to manipulate for political purposes, with many examples ranging from the prohibition to 'war on drugs'. Locking in people from targeted demographics for life for things like possesion of marijuana etc.
Even worse, it allows a two tiered justice system. In which ceos that scam the entire economy and millions get off with ridiculous sentences whereas a homeless person who steals $100 is locked in for life etc.
https://makingsense.quora.com/Privatized-Justice
But the most damning thing is that all the rights can be just taken away from everyone in the blink of an eye based on the opinion of a judge. Just like how a NY court suspended habeas corpus during the BLM protests, effectively ending any and all rights for everyone. Until the NY supreme court overruled it. However, habeas corpus was suspended for a time, and all it would have taken for it to be suspended indefinitely would be the NY supreme court seeing the decision legitimate and not overturning it for whatsoever reason - like the circumstances being serious enough to justify it. And the same could happen with the US supreme court. So all it takes for all the rights to be rescinded in the common law is the highest court, which plays the role of the feudal lord in the system that it evolved from, to see the circumstances justifying a decision.
That doesn't happen in civil law. Everything is clearly and democratically decided and outlined. That even includes what kind of rights could be limited even under conditions of a nuclear war or another global catastrophy. And they don't depend on the interpretation or opinion of one or more judges. The law is clear.
These are technicalities of the topic, of course. Before it even comes to these, the US is a reactionary, hostile society whose laws mirror its attitudes. There is no benefit for anyone else in taking it as example for their own justice.
