Where do I purchase new front wheels? Thank you
Sorry, but new stroller wheels (nor other spare parts) are not very easy to come by - even less so with these cheaper Polish prams. They are simply not sold just so.
My advice here would be to contact the seller you bought your stroller at - he should order spares from the manufacturer, Wiejar. Another way is to contact the manufacturer directly - here's their contact form.
I wish you good luck!