Sounds like you don’t need it. The steam deck is intended for either people with large steam libraries that enjoy handheld gaming or people who are interested in joining the PC ecosystem and want an easy entry point. If you don’t fit either but find portable AAA gaming interesting I would suggest buying a controller peripheral for your phone and download remote play/PSnow/xcloud on your phone instead. Same effect but much cheaper. Streaming is obviously not as good as native gaming but depending on the game, it probably won’t make a big difference.
NGL I’d be upset too if my deck hadn’t arrived before a holiday. I ordered a retroid pocket 2S for my birthday but at the last minute I got bumped to the back of the line and had to wait 2 weeks before I got it. I also agree that some shipping services are pretty ass.
That being said, nothing you can do now but wait. Getting upset unfortunately doesn’t do anything but give you a headache. Take a breather and carry on. You will get it sooner than later and when you do it’ll be worth the wait, I promise you that.