My wife was a big Temu customer until they billed and shipped something she didn't order, it was pretty painless to get her money back though. The incident did cure her of doing business with them which pleased me. I won't used them as the money goes direct to the chinese and I'm not a fan. Their products seem worse than the run of the mill chinese stuff you buy elsewhere too.
I try not to use Amazon either, although I do from time to time. I always check ebay first for things I can't get local, and filter out anything but North American sellers. I figure that way at least I'm maybe helping American small business. Although sometimes ebay purchases do come drop shipped from Amazon, but these are cheaper than I can buy them myself from Amazon.