I find Apple watches and Garmin watches to be quite different, so you might want to narrow down what you are looking for first.
Apple watches are more like a remote screen and sensor(s) for your phone – they’re really good at that and can do some sports tracking. I find my phone stays in my pocket/drawer more as my watch is handling most things (good for preventing me doom scrolling).
Garmin are really good at the sports tracking and do some of the remote screen/sensor thing. If you primarily want the GPS functionality, then this is more what you should be looking for.