privacy

• For Mail, I'd recommend Tuta (which comes with 15-30 aliases depending on the plan) and a third-party aliasing service like Addy if you need more than that. If you want a different aliasing service and are searching around, and trying to avoid giving money to Proton, avoid SimpleLogin, since they are owned by Proton. I don't believe Tuta has email scheduling, though.
• For Drive, either use Tresorit, or use Cryptomator if you're okay with paying for OneDrive/Dropbox/Google Drive. (Cryptomator encrypts uploaded files & names so the cloud provider itself can't view the contents)
• For Pass, I personally would recommend Bitwarden or Keepass simply depending on whichever one you prefer more. Both are good options.
• For VPN, definitely use Mullvad. Simple, unchanging monthly price, you can pay via numerous different ways if you want to keep your identity more private from them (e.g. paying with cash by mail, XMR, etc) and you'll get an account number rather than needing to actually give them any information like an email to create an account. Do be aware it has much less locations than Proton, and most other VPN providers, although it's still quite fast and usable for most cases.
• For Calendar, Tuta also has a calendar feature built-in.

I'd highly recommend checking out Privacy Guides by the way, since they tend to have good lists of alternatives for any other services you may want to switch from also.