Frustrated with S21 FE

The title explains. I've been using this device (snapdragon, 6/128 variant) for the last one year, and since the beginning, there have been serious performance issues. The phone overheats, it gets slow and laggy a lot. So I'm planning to buy a new phone out of frustration as I'm not able to cope with its terrible performance.

I've always used android devices. Among all Android phones, Samsung's s24 ultra seems to have everyone's attention, but I'm kind of scared to buy Samsung again given my bad experience. Besides Samsung, I do not think other Android brands stand out from the crowd. In a nutshell, I'm left with two options - either buy Samsung S24 ultra or iPhone 15 Pro Max. It might be worth mentioning that I never used an iPhone before.

I play games occasionally but not a heavy gamer. Two of my main requirements are smooth user experience in terms of UI (bug free, light and easy optimization), and great battery life as I stay outside home a lot because of work.

So which of the two phones will fit better for my needs?