I've also noticed most girls here prefer to marry someone their own age. If you're 23 and looking for someone who has their shit together then go for someone a few years older.
Your message is on point but your dealing with a group of people that are cursed whom neither know what's good for them nor what's bad.
You could put a Prophet to them on a line up and they wouldn't be able to differentiate him from others, that's despite being blessed with a level of innate intuition that's far superior to males, which they switch off in their prime years only to turn it back on in their 30's or when it's too late.
They wouldn't have survived without this in the past, what would take a smart man a long series of careful interrogations to find out about a women would take them under 10 minutes to assess about a man
But for some bizarre reason this new generation diaspora hippy filth have gone a step further then just ignoring those Godly intuitions, like you said they actively seek out same-age same-class same-primary school room mate kid.
They expect some peasant dude at the age of 21 to have what's only possible to accomplish much later, then they wonder why most of them become single mothers or spinsters.
These are cursed vile people I have no sympathy for because they are destroying society with their decisions with regards to the vile spawn burden they constantly breed, the statistics are shocking in regards to the link between crime/prostitution and those coming from broken homes.