Enduro keeps crashing / not uploading

My Enduro keeps crashing which is very frustrating. I got an update to 20.6 and Yesterday was unable to upload golf and now again with running. I see the acktivity on the Watch but it fails to upload. Yesterday it crashed when I Pushed save after golf. Today it even didn’t crash but just did not upload. I had a cycle session in between on the tacx and this one was uploaded well though. It is not good for such an expensive watch. Any tips? I am loosing my confidence here.