Hey, I was in a *very* similar situation back in 2016-2017. I just posted a reply to the "How many people get shut out each year?" thread, so you can read more there if you want. Essentially, I worked hard and felt like I had "done everything right", and since all my friends got into T10 programs, I expected to do well too. My professors were all shocked that I was shut out, and at one point I was in such a dark place that I even started doubting their credibility because of my failure.
It took me 4 years to gather courage to reapply (and honestly if my home country weren't in such political chaos, I might not have tried). I submitted a different writing sample and applied a lot more widely, so my results are significantly better. So, to reiterate, you're not alone, and this doesn't necessarily mean anything regarding your philosophical abilities/talents, because
1. From what I've heard, this seems to be an especially brutal cycle, so getting shut out this year (especially from T20 programs only) might not mean anything other than bad luck.
2. Even if getting shut out from T20 is indicative of *something*, it might be that your dossier doesn't accurately reflect your philosophical abilities, rather than that you're not talented/qualified, period. In my case, last time I condensed my 60-page honors thesis into about 30 pages, which was probably still too long/ambitious. But I did much, much better this time by expanding on a 15-page term paper written for a grad seminar instead.
Hang in there, and PM me if you'd like to talk more!