Searching for a game similar to Rumbleverse

Rumbleverse used to be my 10 year old's favorite game on Xbox. In the short time he played it he's gotten quite good at it, and got a lot of solo victories. He was so heartbroken early this year when they announced the game would be shutting down.

I've been searching for something similar ever since. Basically a mostly melee battle royale. We found Knockout City... only for it to shut down this month too.

I haven't been able to find another replacement yet. Could use some suggestions.