This new show is basically Westworld but different. Humans are living on a devastated "earth" and fight monsters for survival. Their world is basically a giant moving city with super-robot tech (X-large punching cannon).
The thing is it's not Earth but a game world somewhere on some alien planet run by alien artificial robot machine beings.
Our heroine is a coming of age young girl who's not registered in the alien control system anymore. Most likely her brain chip was destroyed in the past and is considered dead. An alien service player happens upon her and finds/see new purpose in his life about this human girl...
Sword Art Online - Alicization - War of Underworld season2
Dunno, it doesn't look any better. This time the old gang and friends join in.