Yes you are wrong
Thats untrue.
Sherlock Holmes said the brain is a very big attic and you clear stuff out to make room for new stuff.
Sherlock Holmes was fictional and science says its neverending
You forget things eventually but its usually still there.
So you are wrong.
Sorry
(I just took a psych test on this so I know this)
Your brain remembers absolutely everything that occurs. "Forgetting" is just not finding it in your brain temporarily. It's still there, you're just too dumb to retrieve it.
Plus, your brain only pays attention to the important things going on. If you were to actually focus, you would see that you can recall information faster.