Samsung A51 camera features.....how many features and what is the best possibility to capture photos

what class will be preferable ?....e.g class 10...class 2 etc...plz guide

I'm attachéd with since last 9 years (app) onward...I remember the day when I bought a new samsung phone ...and the same experience carrying with...now Im using samsung A5(2016) purchased in the month of Nov 2016' from the day onward i never ever get...