Google Play Guest Account Deleted - Lost Game Progress

I am writing because I lost my guest account and, along with it, all my level and progress linked to Google Play, and I would like support to check if it can be recovered. About six months ago, my guest account was deleted by mistake and, after that, I could no longer connect to it or regain access to the progress I had. I did not have any money or purchases associated with this account, but the levels and progress I had achieved were very important to me, and I do not want to lose all the time I invested. I have not previously contacted Google Play support regarding this issue. I am now kindly asking you to check whether my former guest account and the related progress can be recovered or restored in any way, or to at least inform me clearly if this is technically impossible and why. Thank you in advance for your help and for examining my request.