mate let me spell it out for you.
if you flip a coin there is a 50% chance of heads and a 50% chance of tails. 2x50% is 100%, in other words a guarantee. that means if you flip 2 coins, you will get 1 tail and 1 head.
i know this might be difficult for your walnut brain to apprehend, but i promise you if you go flip 2 coins you will see i am correct