Some Apple Watch SE functions aren't working

Hi, I have an Apple Watch SE OS8.6, something has happened and it's not functioning properly.

1- Battery charge issue, Went to sleep with a 100% charge and woke up this morning with the charge in the red zone. Never happened before.

2- Exercise Tracking is glitchy. Exercise tracking functions sometimes quit or pause on their own or won't launch after I think I've launched it. Exercising for 30 minutes and none of it was tracked!

3- Touch screen glitchy. The Touch Screen works sometimes (for example to launch apps) but I can no longer swipe the screen to find the battery level, theater mode, etc.

Anyone else having these problems? It just started happening all of a sudden a couple of days ago. Up until last week everything was fine.