MacBook Air M2 Battery

Hiya!

Ive just started using my new Mac air M2 and have noticed the battery isn’t as good as I expected. It’s only been on for about 2 days now so I thought maybe the computer battery needs some charging and discharging to function better. But it’s also not lasting as long as expected which was around 14 hours.

Ive been watching some videos for Uni and over 2 and a half hours of that it’s dropped 50%. To me that feels ridiculous for a brand new computer ?