I would not expect the effect to be as extreme as you describe but Clear cache can be a useful first step. For an OS in development this can be important for System apps too.
I regularly use
available from F-Droid.
If the phone is “wasting energy” somewhere then study of Battery usage can pinpoint trouble. Compare especially in a typical time slot
- View by apps vs
- View by systems.
In your case you might look for any evidence of inappropriate mobile data switching (common) or mobile data vs Wi-Fi.