I am looking for ram suitable for my laptop SF314-54-P8UG

First of all, I'm sorry if I have a typo, I'm using translate.
MODEL: Acer Swift 3 SF314-54-P8UG
RAM I WILL BUY: Crucial 8GB 2666 MHz DDR4 Ram CT8G4SFS8266
 
I'm looking for additional ram for my laptop. I'm interested in one, but I'm not sure if it's suitable for me. There is 4gb memory available at the moment. I know it's max 16gb. I'm going to buy 8gb, but there are things I'm not sure about.
my laptop is using ddr4 2133mhz ram
The 2666mhz computer guy I'm going to buy said it would be okay if it was high, he would equalize himself.
I want to ask you too, do you mind if I take it? does it work? i think it is appropriate

[Edited the thread to add model name to the title]