Free Fire Guest Account Lost After Phone Reset – Recover Progress

I have been playing Free Fire for about six years on my Realme C2 using only a guest account. Recently my phone reset, and after the reset I downloaded Free Fire again. When I opened the game, instead of my old account and progress, the game showed “welcome” and created a completely new ID for me. My old guest ID and all my progress are gone. This guest account was never linked to Facebook, Google or any other platform, I have always used it as a guest account. I had invested a lot of time over these six years, and I am very upset that everything disappeared after one phone reset. I kindly request your support to recover my old guest Free Fire ID and restore all my previous progress and items to my account, or provide another solution so that I do not lose the effort I have put into this game.