battery dies quick since OS11

Since I upgraded to OS11 and all the add on ones, my iPhone 7 whose battery used to last 1.5-2 days now dies in a day or less if I actually use it for anything.

I used to have Bluetooth always on so my phone could talk to my car radio, this is now always off.

I used to use it daily for Sheets at work this now has to be always off

I used to play games on my lunch this is now always off

I used to FaceTime my daughter every lunch time this is now always off

Most days now I know if I have one phone call and one message my phone will not last the work day and I will have to finish the day and drive home with no mobile availability.

I would not mind if there had not been such a noticeable difference one day normal, update, next day battery died at work.

I have turned off everything I can and I make sure I only use it when I have to can anyone HELP