Hi! Welcome to the samsung members community.
I dont have personal experience with stava. But I found this;
"Try connecting your strava within the health app. Then (actively) not using the auto record function, turn the walk on via health on the watch. When you stop the walk, it will automatically upload to strava (also make sure your strava email and watch email accounts are the same) as well. I've been getting double syncs on strava because my bike computer and Samsung health I had recording my ride were both recording, so I delete the samsung health upload because it's not as sensitive to my start/stops on my bike"
https://www.reddit.com/r/Strava/s/SGcvbIuE0j
