Waitlist for an international full need means they woulf have admitted you but just don’t have the money.
There’s even less money for international transfers than for international freshmen. It’s over for these colleges.
PERHAPS you can try&apply to Berea college. They MAY admit one student from your country and it MIGHT be you.
If your UK college is online and you’re currently getting a First, your goal should be to attend a physical UK (or European) college.
You can also try to apply early to Canadian universities (McGill and Concirdia Montreal, Waterloo, Simon Fraser and UBC…) looking at applications for merit scholarships (they don’t all work the same way, some have you apply only after acceptance, some don’t have applications, and some do have one which is due early.)