Hi there, Oxana2.

Thank you for visiting the QuickBooks Community. 

You can manage always their roles and limit their access to specific tasks. You can also select what users can see and do within different areas of QuickBooks, like customers and sales, or vendors and purchases. However, removing the view from another user from your custom reports is currently unavailable. 

For now, I recommend going to the Gear icon and selecting Feedback. You can then submit a request to have the option to remove your user to view your custom reports. Any suggestions are forwarded to our engineers for consideration in future upgrades.

Lastly, I'm adding this article to see steps on how you can print, email, and export reports in QBO so you have a copy of your data: Run reports in QuickBooks Online.

Please feel free to leave a comment below if you have other concerns about managing reports in QBO. I'm always ready to help. Take care, and have a great day, Oxana2.