Good luck! I hope you don't mind asking: looking back, what do you think was the main reason for the rejections? For instance, the last time I applied, I got accepted into 2/20. Comparing my materials from that time and this year, I recognize that I was a weak applicant (even though I don't know if I will come the same this time), with no apparent interests that read as very generic/uninteresting. One of my LoRs went from a "famous" person who didn't know me much, so it was a bad LoR in the end. In addition to the post-pandemic surge of applications, I was cooked.
Also, what is your subfield?