why taking this much system storage on s23 U

How can i extend my samsung warranty. YESTERDAY i had purchased s23u, and i joined samsung care plus in online to extend the purchase. But there i found anything, and i went to samsung outlet and they said like they cant help coz i have already regd ...

Any one help me with a solution. I have no screen protector or tempered glass .

battery drains too fast while playing pubg, only getting maximum 2 hours.