When I set up our account, I made several mistakes and inactivated accounts thinking it would get rid of them but they are showing up on my reports, help!

Welcome to Community, dencren! 

Let us work together to help you remove the duplicate accounts showing in your reports. 

We can reactivate the accounts and then merge to remove them. To do that, you can follow these steps:
 

1. Go to the Gear icon and click on Chart of Accounts.
2. At the upper rightmost part of the Chart of Accounts window, click on the small Gear icon and mark Include inactive.
3. Locate the accounts you want to reactive, and click Make active.

The reactivated accounts will now show on the Chart of Accounts window. After that, you can now merge those duplicate accounts. Here's how:
 

1. Find the accounts you made active. 
2. Click on the Report dropdown and select Edit.
3. Update the account name.
4. Click Save and Close, and click Yes if you are prompted with a question confirming the merge of accounts.  

Should you need to reconcile future transactions in your Chart of Accounts, you may follow this article: Reconcile an account in QuickBooks Online

Please do not second guess reaching out to us for further concerns with regards to your Chart of Accounts. I'll be more than happy to provide you with additional assistance. Keep safe, and have a great day ahead!