Trying to save battery... does turning off some "Running Processes" help?

In Settings>Developer_Options>Running_Services, I see several things that I don't need.
https://ift.tt/2tC94R6

I believe that unnecessary services that run are unnecessarily depleting my battery, leading to a shorter battery lifespan.

I use my fingerprints to unlock, so I'm not sure if I need these services that I see are on the list of "running services":
★ Face
★ Intelligent Scan
★ Iris

Question 2. Do "cached background processes" sap my battery?

I see the following "cached background processes" https://ift.tt/2H1jTnp

Here are some that I don't need:

★ Bluetooth
★ NFC
★ Samsung DeX System UI (My Samsung phone is not connected to an external monitor/computer)
★ Google VR Services (I don't need/use VR)

https://ift.tt/2H1jTnp

Running Samsung S9 on Android Pie. (My phone is not rooted and not rootable.)

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