I’m now actively using Godot 4 which exports web builds that require a SharedArrayBuffer.

Only Chromium-based browsers will be able to load itch.io games that require cross-origin isolation without mods.

I personally use Firefox with this fix.

There’s also Ungoogled-Chromium. It’s Chrome but with all the Google stuff ripped out. It’s available for Linux, Windows, MacOS, Android, and some other platforms