I am surprised to read this trail of problems with LibreView 2 sensors failing to stick , exacerbated by showering, swimming or (exercise induced) sweating.
I shower daily and take moderate exercise but have not experienced the problems mentioned. Indeed, I experience trouble removing the spent sensor after 15 days and on one occasion, the sensor, on removal, detached from its sticky pad, leaving the adhesive disc stuck to my arm!
Maybe the application technique needs to be looked at?
I always shower and clean the site very well before attaching a new sensor and ensure the site is dry and free from any obvious dead skin, etc.. and have never experienced peeling problems over the 15 days. Granted I haven't swum since starting with CGM in March 2023, so maybe swimming would have a different effect.
Hope this could help?!