Before you move out, demand your landlord provide receipts for any repair costs they claim justify keeping your security deposit. Most landlords can't produce them, or the damage is just normal wear and tear, which means they have to return your money.
Never, ever, ever move out without doing this first, because landlords are praying that you never figure this out. You know when you have to pay a security deposit when you sign up for a new lease? Once that lease is over, the landlords almost never want to give it back, even if you left the property in good condition. So use this method that forces them to return it to you legally. See, when they refuse to give it back because they need to use it to repair damages on the property, just simply ask them for the receipts for their repairs, because without them, they have to legally return your deposit, no questions asked. And nine times out of 10, they don't have them, or they're for wear and tear damage, which doesn't count legally. So before you sign that lease, remember to.
