"A suspicious app might have accessed your account"

I dont know how this is possible... So I got this message from google. I scanned my pc with some anti viruses and did not find anything. I still thought that it could be serious and since I didint have anything that inportant on my pc I reset windows and wiped all my drives. I did this 2 days ago and I got this alert again today. So my freshly reset pc has some "suspicious app" on it?! I only have steam, discord, spotify, gefirce experience, epic launcher and opera gx on my pc. I also have a few pictures but I dont think they could cause this. I do not believe there is actually some malware on my pc but still what could have caused this on a new windows instal? I think it must be tied to a proplem in the google account it itself. I have no clue what to do and I am highly annoyed.

/r/PrivateInternetAccess Thread