I find the watch works better with the ring, or visa versa, I get 2 days fromy watch but that's playing with the settings to achieve that, and watching some YouTube videos on how to save battery. I keep my WiFi and mobile data set to auto, plus use raise to wake and have screen timeout set to 15secs, but maybe you should not use the raise to wake function when training, and search a less energy watch face. If you want max out of your watch keep the power save mode switched on, or click on the power save icon in the wear app and you'll see other power saving options. I came from the watch 6 classic 47mm LTE straight to the ultra and not regretting the early move. I've owned the Samsung watches since the Tizen days, then the galaxy watch classic BT (first one with wear OS), then watch 4 classic BT, watch 6 47mm LTE and now this ultra. And try using adaptive settings