iPhone 7 malfunctioning in the latest update.

Hi I'm Jay, and I own an iPhone 7! It was working awesomely well until the last few software updates.y phone is lagging and malfunctioning alot. Given the powerful processor and other specifications, the current updates on my phone shouldn't cause much problems but still it's causing alot of lags and hangs and malfunctioning within the apps. Even in iMessage! Please look into the matter and get a stable software update soon! Thanking you, yours faithfully, a loving iPhone user! Hereby is a link of the screen recording I've just had to show you how much it is malfunctioning:

https://drive.google.com/a/somaiya.edu/file/d/11wAF81cX9hWSLmBk9xA8ww8E8SQVVki2/view?usp=drivesdk