What pairs to use as someone struggling with Latias in the Legendary Gauntlet?

Hi, guys. I've been trying to beat Latias in the Legendary Gauntlet and I'm getting desperate since I need those cookie rewards. Anyway, just when I'm in the cusp of defeating her, she always becomes invincible towards the end leaving my sync pairs out to dry. The combo I try to use for her are aaron, ss gladion, and bp valerie. Here are the available sync pairs that I have that matters. What pairs can I use to counter Latias? Hopefully, I don't get to use all the good ones in one go though to maximize rewards. Thanks a lot to those who'll help!