You fell for Yehuborim trolling where they comically lie as a tradition during their Purim festival. Read the end of these articles:
Trump’s decision comes after days of consulting with his D.C. area Yehubor's leader — Yehubor's leader Gary Busey.
medium.com
He hopes to be a real Yehubor in time for Passover.
jewishbusinessnews.com
This one calls him Yehuborim because he helped yehuborim, no mention of conversion:
https://blogs.timesofisrael.com/donald-trump-americas-first-Yehuborim-president/
The video you used which is from 2019 claimed Trump would publicly in a few days announce his conversion to Judaism. He never did such a thing. It also claimed CNN will release the story of Trump converting, also never happened.