HELP ME PLEASE I'LL MARK YOU THE BRAINEST!!!!!!!!

Answer:
those symbols were used to hide messages so instead of using letters from the alphabet they used those symbols.
Explanation:
Using symbols to write is different than using an alphabet because with symbols sometimes, they will appear as though they tell a story. Other times the pictures used to write, like in Hieroglyphics, are symbolic of things that can help explain what they are trying to say.
Hope this helps!!