Lost Play Games progress, account doesn't appear in API

I recently got back into playing Clash Royale after four years of not playing, and discovered that my Google Play progress had been lost. When I ran a custom search on the API for my old name (“MaTT”), none of the results were my account, and they all had newer cards. Is it possible that the API doesn’t show old accounts, but my account is still somewhere in the SuperCell servers? I don’t have the player tag, I only remember being around 3050 trophies. If I can’t recover it through SuperCell, could maybe Google recover the progress?

We can only search for accounts by name IF you have accessed the account on our site before. The only way to absolutely fetch your account, you must use your player tag.

Since you don’t have your player tag, it’s not possible.