Fossil and Mobvid’s TicWatches are normally my go to alternatives, but personally, I haven’t been impressed with their latest offerings. Google and Samsung really do have the best WearOS devices, if that’s what you’re looking for.
That said, I realized recently I wasn’t using most of the features in WearOS. I had a dozen apps and barely used any of them. All I really used it for was notifications, music controls, and as a basic step counter.
Picked up a PineTime and I’m pretty happy with it. It’s basic, but it’s cheap, repairable, and I can flash alternate firmware/oses on it easily with gadgetbridge.