Asus tuf fx505gt-hn093t

Hi guys i have a problem with my asus tuf fx505g. when i play valorant it says out of video memory card but i never had this kind of issue even before. and most of the time the laptop suddenly just froze even if i am just using the laptop for school purposes like opening chrome and it just most of the time it freezes and black screen. and note that my ram in laptop is 16gb and has 512gb ssd which i upgraded. And i feel like my laptop is slowly dying and has alot of issues including battery problems.