Fedex — Missing packages within two months

Hello at this point I believe the delivery drivers are stealing packages. I had two packages within the last two months that didn’t arrived at my door as they claimed it did. I have lost $400 within these two months and trying to recovery it. This company need to start taken pictures of proof they dropped it off at the door and if the package needs to be signed for the driver should ask for ID and also snapped a picture of the ID for verification to send over to whoever in charge. I hate dealing with Fed ex and USPS now days.