Garmin Vivoactive 4s failed after swim

This has been raised many time  before but I cannot see any satisfactory solution.

I had a Vivoactive 4s which failed in February 2023.   Thought it was just bad luck and I bought a replacement.   This watch lasted until December 2023.   The same symptom both times -screen went black when there should have been enough charge, tried charging and watch became very hot, dead as a doornail!

Garmin support were great and I received a credit for a replacement.

I sent up all my features.I use the golf app, walk, and swim.  This watch lasted 3 days!  I had done walks over 2 days, and a 300m swim.  Garmin have again given me a credit.

I really like the watch .  It does everything I need and is simple to use but don't want to go through this process again.  

Does Garmin recognise that there may be an issue?

Is there a fundamental problem with this watch?   

Is it truly waterproof?  

Can anyone recommend a good alternative?

I would like to see it investigated properly.

Thanks, Peter