Made Little Progress in Switching from Google, But Stuck on the root of the problem

cross-posted from: https://lemmy.world/post/27977693

Hey everyone!

So, I’ve made some small progress in switching things up on my Android:
Replaced  Gmail app with Thunderbird
Replaced Google Calendar with FOSSify Calendar
Replaced Google Play Store with Aurora & F-Droid
Replaced  Android file manager with FOSSify File Manager
Replaced  Android keyboard with Heliboard

But now I’m hitting a wall trying to find ones on root of problem:
free replacement for Gmail
free Google Calendar alternative that works well
 on both Android and via Thunderbird    Windows 
Self-hosting isn’t really an option for me, so I’d love to hear your suggestions!

If you’ve found something you really like, please share your experiences.

Thanks!

UPDATE

just started a free account with infomaniak so far happy with infomaniak except the free email extensions like @ik.me @etik.com or @ikmail.com addresses whether will be accepted / recognized by institutions like banks etc

also found a community group at https://www.reddit.com/r/Infomaniak/ will search if any group here as well

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