Have you looked into https://godotengine.org/ ? It has a pretty slick web export that supports WebGL really well last time I looked at it. There's also things like https://threejs.org/ that folks have done some pretty amazing little games with.

I've found Poki has a comparison of web game engines (including some lesser known ones) that may he worth checking out even if you don't want to publish on their platform: https://developers.poki.com/guide/web-game-engines