Safari keeps logging me out of gmail and other sites
History: I used an old mid-2011 iMac for ages until it was unbearably slow. Loved it. After I donated it, I used a Windows 10 PC which was a surprisingly smooth experience. Now: I finally got a Mac Mini M4 recently. It's lovely, but something about the configuration of the OS and/or Safari keeps logging me out of iCloud, Gmail, Facebook, and other sites. I have to keep re-verifying my login, even multiple times within a day. I turned off advanced tracking and fingerprinting, but it didn't help. While I appreciate the efforts at privacy protections, this is cumbersome and annoying. Any suggestions?
Mac mini (M4)