samsung galaxy s4 i9500 having problem after upgrading to lollipop 5.0.1

hi guys i m using the Samsung galaxy S4 i9500 I dont have any knowledge about rooting of device . I m here to know that my phone is having issues after upgrading to android lollipop 5.0.1 the issues are like hanging,battery drain,app crash, etc so i want to know that does the rooting solve my issue If does then please suggest me what mod should i go for i also dont know which build is to use 11 or 12 so please help me with this :):)