My mom needs a new phone. She is used to Samsung so Samsung it is. A54 is 400€ and S23 is about 800€. Is S23 that much better?
Samsung don’t have screen protectors like in OnePlus from factory. So installing them without dustor air bubbles is gonna be tough.
As far as installing the screen protector without dust specs. Run the hot shower for a few minutes until you get a little steam, that’ll settle all the flying dust to the ground inside the bathroom door closed. Proceed to install the tempered glass shield in the bathroom. 99% of the times air bubbles do not form as long as you line it up right the first time. I’ve done so many of these I can do it blind folded.