Iphone 12’s performance has degraded a lot since I updated to iOS 18.2

Hey guys. I was using Pinterest and just after 5 minutes the app started lagging like crazy. So, I went to the home screen and it was choppy for a good minute. A few days ago I was playing a cricket game and after about 10 minutes the game started lagging. I haven’t had these complaints before. Even the general day to day performance is not as smooth as iOS 17. Initially iOS 18’s performance was buttery smooth. But now iOS 18.2 feels like a step down.

Battery health - 83% Storage - 37/64 GB

Please suggest how do I make it smoother like before. Also, do you face similar issues on Pinterest or any other app?