For me personally, I want to limit interactions with my phone by reading notifications on my wrist, only allowing certain apps to send notifications through, and maybe sending a quick reply through the watch if needed.
That said, most smart watches now are overcomplicated bloat, it’s all been downhill since the Pebble Time IMO
Cheap but probably won’t work I’m guessing?
If you really want a cheap smart watch there’s a bunch of reliable ones worth looking into rather than getting something random on temu. I haven’t tried the Pine Time but it looks good if you like fiddling with the tech.
If you can put up with Xiaomi they make a ton of different options. I used a Mi Band for a few years and it kinda did what I wanted it to do better than my current Wear OS watch does