I simply don't understand why you are receiving so many complex responses for a really simple issue. You state in one of your posts that "I have office 365". Is your email server part of that Office 365 plan?
If so, there is only one reasonable solution. You need to setup your Outlook to correctly use the default settings for your Microsoft email account (POP is an ancient protocol and will continue to be impossible to manage in any client). In Outlook on your laptop, go to File > Accounts, and choose to add a new account, choose 365 as the account type, and enter your email address and password. That will correctly add the modern settings for your Microsoft email account. In the sidebar "tree" of Outlook you will now see both the old "local" email account storage, and a separate one for your correctly configured account. Simply copy all of your contacts, email (sent and received), and calendar items over to the new account folders (that are stored on the server instead of locally).
Once you have copied your mail, contacts, and calendar items to the server folders, then you can go back to your iPad, iPad mini and iPhone. On each of those, simply download the official Microsoft Outlook app from the App Store, and then add your 365 email account. After you do, you will immediately have the same email, contacts, calendars on every device.
Lastly, if you you really want to make your email life better, stop using Outlook on your laptop altogether. Instead, use the 365 version of Outlook online (webmail). The new web version of Outlook is great and once you adopt it you will never need to open Outlook agin on your laptop and will never need to struggle with syncing again.
The end goal and result of all of this is that modern email, calendars, and contacts, ONLY work well on multiple devices if they are stored on a modern email server (a.k.a. "cloud server"). When that is the case then every device gets it's information directly from the server and never "syncs" with another device directly.
I wish you luck.