I'm the developer of Bronze & Glory, a free turn-based gladiator game that runs in your browser on desktop or phone. Nothing to download, and quick play needs no account, so you can start a bout straight away.
Every attack shows its hit chance, damage range and energy cost before you commit, and your opponent telegraphs its next move, so each bout is a small puzzle about range and energy rather than luck. There are four classes (Sentinel, Duelist, Berserker, Arcanist) and a 100-opponent campaign. Online duels against real players need a free account.
Play: https://bronzeandglory.fun/?ref=r20-ah-webgames
Arena Hour, today 19:00–20:00 UTC (and every day until 26 Oct): live online matches. If nobody else is searching, a clearly labelled Practice Bot joins so you aren't left waiting.
Arena Night II: Sat 24 Oct, 19:00–21:00 UTC (15:00 EDT, 20:00 BST, 21:00 CEST).
The home screen also shows the Arena Hour time in your local time, with an "Add to my calendar" button.
What would make you play a second bout? I'm reading every reply.