Hi, I'm not a big expert because my Nokia 3 is the first Android after 10 years of Iphone, but I think maybe your problem can be solved (even partially) with a different setting.
Nokia 3 I use it everyday and the battery lasts for two days, I have to stress a lot to do just one day! However, I deleted almost all notifications, including mail, I do not use widgets, I do not use active position (active only for maps or little else), and I did not activate automatic play store updates and when I want to update them manually.
All these little tricks I've learned from many years with IOS and I see they work well with Android. Try reducing the workload in your phone's background and see if the battery lasts longer, then if you want to enter one thing at a time, what you need and you can not do without it.
I hope to have been helpful and... excuse my English, but I go with google translator! ;-)