Syncthing - replaced both gdrive and Photos, syncing via your wifi to a main PC or server.
OnlyOffice - office replacement
Joplin - replaces Keeper (I think that was google's list/notes app)
Futo Keyboard and Futo Voice - replaces google's keyboard and voice recognition software
Thunderbird - email client replaces gmail client
Purelymail - replacement for free email if you use a few of their domains, totally free, OR, pay $10 USD a year and you can use your own email domain, plus comes with contacts/calendar/doc support sync with DAVx3 on all your devices. Used them for about three years now, awesome, never down. If you want something outside the US, then use one of the more expensive alternatives, Proton mail, mailfence, etc.