Free Fire Guest Account Lost After Phone Was Lost, Need Account Recovery Help

I am a Google Play user from India, and I am writing regarding an issue with my Free Fire game account on my lost Android phone. Around five years ago, I started playing Free Fire on that device using only a guest account, and I never linked it to Facebook, Google, or any other login method. Recently, my phone was lost, and with it, I lost access to this old guest's Free Fire ID. I did not make any purchases or spend money on this account, but it is very important to me because I played on it for a long time, and all of my game progress is there. Since it was a pure guest account on the lost phone, I have no way to log back into it now. My main request is to receive help to recover or restore my old guest Free Fire account that was on my lost phone, or to be guided clearly if there is any possible way to link or retrieve that account through Google Play or Free Fire support. I kindly ask you to review my situation and inform me if anything can be done so I can get my old account back.