Try switching off your phone for an hour and I think it will get going good. Coz I have faced the same problem with my other phone and it worked. After all it is a machine just give it some time. It may be because of the heavy or extended use.
if you simply update software via mobile data or wifi then this will happend only because of maximum chances to produce software loop holes where the actual process to install software in samsung devices is via smart switch and pc or from odin or through authorised samsung service center as they use odin only for their official purpose. samsung provides non A/B partition type ota software not like other company hence if someone simply update it via mobile data or wifi then anything mysterious can be happened with device even motherboard, display can gone forever as many users faced it before... thatswhy samsung introduced smart switch that people can get software loop holes free highest performance of device but people doing same mistake repeatedly and facing different different types of issues in devices by same software..
one of the main reasons of battery drain is even you close apps but they uses ur battery and running in background unnecessary, see image and read the statement. 2nd due to huge notification enable. for e.g ; Google has huge notification which we don't need at all see image just scroll down image and check how many notification it does have. So do these settings to stop, which consume unnecessarily.
Besides above settings do some more settings to save more battery life and observe for next 1-2 days, it will give a noticeable difference
3. Device care>battery >power mode>select "optimised" and "adaptive power saving".
And then click on "app power management > And enable these 2 options. A. Adaptive battery B. Put Unused Apps to Sleep.
4. Long press on each app specially 3rd party(LIKE FACEBOOK, INSTA,YOUTUBE) and rarely used apps and also ON "GOOGLE APP" as well, then click on>app info> then go to these 3 options below on by one
A. Mobile data> allow background data usage>off
B. Battery >allow background activity >off
C. Notification >disable unnecessary notifications like promotional and unnecessary reminder notifications.
5. Go to settings >apps>search "weather" >click on settings icon right side > change "auto refresh" settings as per your requirements and disable some unnecessary reminder. ( due to auto refresh it continuously consuming battery?)
6. If you use Facebook frequently then disable "auto play video" And if you are mostly uses mobile, on wifi connection then also disable "auto play videos" in YouTube.
if battery draining is new only after update with same settings and usage as before then no new settings needed.. just a calibration problem. 1. clear cache partition 2. drain the battery completely until it doesn't turn on. 3. charge the device to 100 in switchoff mode for good results. 4. again drain and charge again for 100. do this twice. 5. once done use your device between 20-80% for better battery life.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report/ask question). Kindly send us the screenshot (which apps are consuming most of the battery). Note: Please send device log files within 15 minutes of issue occurrence along with the exact issue details.
