S5 mini issues topic

Hello, i recently got the Samsung S5 mini and i am having a few issues.
The battery drains way way too fast, i tried all suggestions i found in message boards with no help.
The battery drains super fast even with minimal or no usage.
I have installed the following apps:
CM security
Avast
Lyft
Google express
Gett
Kitchen timer
Battery doctor
Talking Tom
VLC
Clean master
Shazam
Gamekids lite
facebook
Via
Yahoo mail

As my main email i use gmail wgich i added to the main mail but i keep on getting an error saying "unable to connect to server".

Also, i kerp on closing all open provrams (with buttom on the left of main button. But it does not help.

Suggestions?

Thanks