If you can help, thank you. If you can share, thank you

Hello everyone I’m very sorry but I really deeply need help, beginning of this year a had a app name MoonPay, In short I download it awhile back couple months ago for some reason must’ve saw it somewhere or got recommended to get it, I made a login with my Face ID a few days before I got hacked in February, Not sure how but the blame is on me because I had log my info in it. Only reason I found out was cause my bank called me saying they noticed many charged from MoonPay, (yes this amount, they took a bit)(haven’t even learned how to use it yet), I got it refunded from my bank shortly after the incident but now they are taking back the money since I had a Face ID with them, even when I said already I made a account with them before the refund, I really need help I’m on negative, please sincerely anything will help I’m stressing right now, I hope everyone has a good day.