You should be able to disable system packaged apps unless you are running an absolutely ancient version of Android. It's the same effect as uninstalling except it keeps the original package in storage in case you re-enable.

Firefox on Linux doesn't have GPU acceleration out of the box nor GPU video decoding (at all still?). Firefox on Android has it's own litany of issues (though to be fixed in their new version soon™).

Edge was actually pretty great on Windows but everywhere else it wasn't Edge and it's going away to come back as a Chromium clone shortly anyways.