Im in the same boat. Need a LHS taillight assembly - actually just the outermost clear lens but it is sold as an integrated unit.
That outer plastic clear lens over taillight assembly cracked and broke off. Taillights fine. I have called some local junk yards to no avail. It seems some of the larger and more savvy link to a central database car-partdotc om where you can leave your contact info. I spoke to a couple of the larger yards regionally and they sell for not much less than new when they do get them. ebay and aliexpress have them but you have to watch quality and shipping times; they are much cheaper. I have seen some posts here regarding parts...it seems a bit of a challenge that takes time, research and patience