buy a new laptop or replace the laptop battery ?

My laptop normally dies after 1 hour but it needs to always plugged in to get best performance. Its an gaming laptop so maybe thats why? I could never use it unplugged for some reason. (I choose 80% max battery rathen than 100% or 60%.)
But I choose to replace it after the health of battery went down 50% and some stuff started malfunction. (Like bluetooth etc) Now I see a huge difference in performance.

should I buy a new laptop or replace the laptop battery ?