Calendar items are gone after screwing with iCloud settings

In the midst of adding a work iPhone to my Apple account and screwing with iCloud settings, I've lost calendar items. I cannot remember exactly when this happened and I hadn't backed up iCloud Calendars so I can't just Restore an older version. I've also found my Notes are only in iCloud and no longer on my phone which I want to move them to.

What are some ways that I would've deleted Calendar items?
How can I move iCloud Notes onto my iPhone? I've Googled this and nothing has worked.

via Canadian Mac Forums at ehMac https://ift.tt/h0F4yvr