My Acer Nitro 5 AN515-55 wont start unless is plugged in

Hi guys, not native speaker so forgive my english mistakes. On last july i bought an Acer Nitro 5 AN515-55 and last couple week the battery completely stopped working. When is plugged is says 100% charge but if i unplug immediatly shut down. I recently installed win11 so maybe is the issue there?

Ty all in avance for help