This is a daunting proposition, I'm admittedly massively invested in Google's ecosystem. Gmail and Google calendar, I have a pixel phone, watch and buds and have YouTube premium. I feel like the time I switch is when I have a homelab and am able to find open source alternatives to everything heavily use and be able to do so with all devices I use.
I wanted to but my pixel bootloader is carrier locked. Supposedly you can call and ask them to unlock it if you own the device but not sure if that's true.
Some are easier than others. Especially if you don't mind paying. Protonmail, calendar, drive solve some big ones right away. Maps is tough though, I've tried to find a better solution and haven't been able to so far.
I've been mapping my city with streetcomplete and using osmand live to download my edits, organic maps has a better address search though, so I use that too. I don't use the live traffic stuff, but osmand is capable of it.
Yeah same. It sucks. I got into Google stuff back when Gmail was in beta and invite only. Admittedly I really only use Gmail, drive and the calendar. But the sso aspects is the part that is the hangup I think. I have so many accounts utilizing their identity provider solution.