I've had a load of issues today with my Pixel 6. I had been at work for an hour and I could hear someone talking, got the phone out my side pocket of my work trousers and the screen was red with police are on the other end

I just said sorry it dialled on its own. I looked through my call log and it had called 6 other people.....
I then went into my recent apps and it was full of random stuff and settings etc. My mobile data and wifi was turned off along with my Bluetooth.
My battery was at 79% so it had used 21% in an hour also. The main culprit was my Nest app for my doorbell which I had not opened.
It's been fine since I had it and the only thing I changed recently was the "Increase touch sensitivity" to ON. I have turned that off again as I'm using smart lock (when connected to my Versa) because FPS is so hit and miss.
The phone is at 70% now so has only used 8% for the rest of the day.
I came home from work and said "Hey google, play Signal 1" to my home mini in the kitchen. It started playing but I noticed my phone on the side unlock and stay unlocked ! On my pixel 2, it used to go back to sleep.
I'm not too impressed with the phone after today. I might just return it and go back to my Pixel 2XL because I had no issues with that and only upgraded to get updates also so my daughter could have my old phone.