At this point I feel like I should have used a throwaway with how many details I'm giving away here haha, but I have never attached a google account to my phone (I access any google services via browser), and while I don't run a degoogled OS but I have disabled play services and all google features + apps. I'm aware that there's still a chance that Google has trackers, but those trackers would (1) have to detect which reddit account I was using inside my FOSS reddit client (2) detect which video I watched on my FOSS youtube client. It's possible but I decided that this level of surveillance was both more nefarious and less likely than them using timing analysis.