left side of ipad pro m2 cellular is heating

It is not unusual for an iPad to become warm when being used - more so when using some types of iPad case. High screen brightness and/or CPU intensive Apps will also create heat. Localised warming is not, necessarily, indication of anything untoward.

The key point is that whilst your iPad may become very warm in normal use, the iPad should not become uncomfortably hot to handle. If your iPad is becoming too hot to hold, or if you have any concerns, you should take your iPad along to the Genius Bar at your local Apple Store - where the technicians can examine and test your iPad for faults.

Genius Bar Reservation and Apple Support Options - Apple

If that’s the case, then you should probably use your iPad in a cool area and turn it off when it gets too hot.

in my new purchased ipad , left side getting hot from just normal usage. Its my first week of using the ipad.