Thanks. Could you elaborate please?

I’m currently on an iPhone X bought in September 2018 and its performance is very low (slow in everything, the touchscreen glitches sometimes, the camera has a weird overlay) and I wanna upgrade. I’m gonna be using the new phone for 4-5 years at least, so I am open to a more expensive model if I can use it for longer. I can’t decide between the 12 pro max, 13 pro max or 14 pro max (I could go for smaller phones but it’s been a while since I started wanting a bigger phone so I’m gravitating more towards the pro max models). I care about the battery life a lot, camera but not too much, fast performance and storage (256GB and up)

What do you recommend?