The “spinning wheel” to which you refer indicates network activity. A process on your iPad is accessing the network.
You’ll need to do some detective work to identify the process. An indication of network activity will not, of itself, impact speed or performance of your iPad - or of itself suggest a fault for which you should necessarily be concerned.
To identify the process that may be causing unexpected network activity, you might try force-closing all Apps on your iPad...
Assuming that your iPad has iPadOS 13 or later installed, swipe upwards from the bottom edge of the screen towards the centre of the screen - and pause briefly before lifting your finger. This gesture will invoke the App Switcher - and will display the “open” (but not necessarily running) Apps. Each App can be force-closed by swiping its respective window off the top of the screen.
For models of iPad with a physical Home Button, a double-click of the button will also reveal the App Switcher.
With all Apps closed and the iPad idle, other than occasional system activity, the network activity indicator should only been seen intermittently.
A common reason for extended network activity indication is a potential problem with your email provider. If the mail server is offline, performing poorly, or is only accessible over a slow network connection, you may see extended network activity as your iPad continues to attempt synchronisation with the mail server.
A further tool with which to control network activity is to change your WiFi network setting, on your iPad, to enable Low Data Mode. This will inhibit automatic background network connections for email and other services. This should further reduce network activity - and is a useful diagnostic tool.
I hope this information and guidance proves to be helpful in troubleshooting the perceived problem.
