Transfer to ivies

I literally got rejected and waitlisted from every schools that I applied to except for U Michigan but it doesn’t offer any scholarship or financial aid (I’m an international student). So I am considering about applying to a state university with relatively cheaper tuition where rolling admission is offered (penn state, purdue…), and then trying to transfer after the freshman year.
My stats are: 35 ACT, about 3.90 UW GPA, rigorous course load throughout my entire high school, very strong ECs.
(Yes, I just got rejected from 6 ivies yesterday and several others recently…)
If I spend my freshman year as best as I can (4.00GPA, ECs, and else), how much will it likely be for me to get into those top notch schools that rejected me this year?

Itʻs very difficult–period. Much of transfer admission is tethered to attrition, and since attrition is typically around 2% at these schools, very little spots become open. Princeton does not accept transfers, and Cornell, has the most liberal numbers for transfer admission, close to 20%, but some of that is due to a NY state program directly with the school. Overall, transfer admission is actually much more difficult than regular admission on a statistical basis .Best–