ipad air 5 gets heat while note taking

I have new iPad Air 5 happens to be 1 week old before note making. It gets overheat quickly while note taking and battery drains fast .. I wonder why brand products easily get overheated . Before note makings I turn off background refresh , deleted background apps , stoped internet browsing. And still It happens to be in same condition while note writing. .. I think I have wasted money by purchasing this product . As simple note making gave bad experience to me…Do not buy this product instead buy android devices and save money.