Question

why two same charge reple each other why they not attacked each other​

Answer 1

Same/like charges repel, unlike charges attract (or as you said "attack")

Answer 2

Explanation:

so lets say you have a proton and also a proton

now we will examine what happens b/ w them

but first understand a concept

a charge +ve or -ve in space creates an electrostatic field of its own. it is called electric field.

this is observed phenomena.

its true always.

now if you put a same charge (here proton ) it was observed that it moved away from the original proton

and if you put an electron it was observed that it moved towards proton

they can't attack each othee.

they are not dogs or human beings.

they are basic things like legs of a chair.

they don't have conscience.