It's not the number of people, it's their character, or lack thereof.
The media sensationalizing some events and not others skews the perception outside of the US- if you read or heard anything about Milwaukee, Chicago, Seattle and Los Angeles recently, I doubt any of it was good. Certainly not in Milwaukee, where some have reached new lows, but not at the same level as in some years. We have some who are mentally ill to an extent that shouldn't be possible because they shouldn't be in public.
UK has a total of roughly 57 million people- only two cities have population over one million and the US has nine. You can't consider open land in this because the problems are in the cities, same as in UK- what's the point of using vast open areas when almost nobody lives there. If you consider the more populated areas in the UK, you would see a different picture.
The UK has far more history and the US is a punk kid, by comparison and the education systems are totally different- here, far too many decide that there's nothing for them in school, so they drop out and become gang members, drop out completely and end up as a burden on society. In the UK, it's more likely that dropouts will gain a skill and when the dropouts are in the numbers we have here, things go bad, in a hurry.
And you still can't admit that people are the problem. In order for this to improve, people need to improve.
As an example- in the US, 1,020,729 were stolen in 2023, many in armed carjackings.
www.nicb.org
Check the second link- it shows that many crimes decreased, only carjacking and drug offenses increased, the latter by a much smaller percentage. Fentanyl and a few other drugs are now the most frequent. Check Homicides- down almost 10%, another link shows ->13%.
New CCJ Analysis of 2023 Crime Trends Also Documents a Continuing Spike in Motor Vehicle Theft, With Offenses More Than Doubling in Seven Cities
counciloncj.org