As for the Pixel it's ok, just switch to LineageOS, but you'll want F-Droid + Yalp, or F-Droid + Aptoide if you feel adventurous (awesome project but they are just getting started.
Drive... I'd recommend Nextcloud, but then you need to choose a provider since it's decentralised. If you're in Europe I'd say woelkli.com, if you're in Asia or America sorry I don't know what to recommend but I'm sure there are good options. Nextcloud will do a lot more for you if you need (CalDAV, CardDAV, Password manager, Bookmarks manager, etc).