M1 MacBook Air Battery..

So I just got my M1 MacBook and I'm loving it. It was a hand me down from my parents and I'm really grateful for it.

But my only concern is the battery life right now. From 80% to 23% lasted me 4 hours and 50 minutes only. Just wanted to know if that's normal and if there's any way to extend it more? I've only been using it to watch shows, studies, notion, and other light stuff.