Windows 10: my laptop shuts down suddenly

i have a 64-bit os, 11th gen windows 10 asus vivobook, and it's 1.5 years old, and recently it keeps shutting down without even giving me a warning that it's low on batteryit usually happens when it's getting close to the time i would get the warning when it's getting there for the first time after being turned on. the brightness dims, and my music starts cutting off, and just as i plug it in, it shuts down with a "shutting down.." screen appearing. i didn't mind it much as i would usually be playing a game and thought around 10% battery might be too little for a game, but about 10 minutes ago

:)

 

LAPTOP SUDDENLY SHUTS DOWN

My laptop is 8 year old its battery gave out 7 months ago it wont charge and my laptop wont start without charging so it shutsdown suddenly bcz of charger moving or electricity goes out about 3 times a day it shut downs suddenly in one day will it cause
any problems and if yes which and how much long can it survive like this

 

laptop shutting down suddenly when power pluged in

laptop shutting down suddenly when power pluged in

 

Best laptop under $800??

Well the last one I suggested seems to be the best for 650$

EDIT: to facilitate your search...

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