I despair sometimes .
Of course no individual source of informations is as reliable a looking at more than one. If more than one source (and no I don't mean you own personal subjective opinon of the area you live in) suggests that crime is falling, it probably is
Note the 'probably'. I don't know for sure (I am aware of the issues with the ONS) and in my local area it feels like crime is up but that does not mean it actually is. Of course if enough random people on the internet say it it is, then it must be 
This sort of response is on a par with the responses when someone posts that the average salary in the UK is £X pa and you get poster after poster saying that is not true because they know so many people that earn more/less (select at random) - (double
)
I absolutely agree that crime reports and the ONS might not be completely reliable in lots of ways but they are almost certainly more reliable than one person's opinion, particualry if both sources supprt each other's findings
If they are saying crime is down, the correct response from a graduate with supposed critical thinking skills is to think
' that is interesting, its not my experience , let's see if there is any evidence that further supports this or proper population wide evidence that supports my personal subjective experience' Then if there is no wider proper evidence that you think is reliable, maybe keep an open mind rather than close down all arguments to the contrary because they don't fit with your preconceived notions
It is perfectly possible to understand that crime is down overall (factually) but that you personally don't feel like it is. Or to feel like crime is up but to also understand that you don't have enough evidence to say that this is true across the country