If you feel better, I do the same stupidity and it came out in the last roll. Most expensive I have ever bought in a gatcha but I don't regret anything XD
"Collabs never rerun" is less absolute these days. The dev's previous game, Destiny's Child actually had a way to get collab dupes (but cost dupes). But the FOMO is real in case something prevents reruns (see the Azur Lane/Hololive collab) But Skin gachas can be very "YA BE" as a certain fox fiend gacha fiend once said.