Did this break under normal use or did it break while trying to remove it?
If it broke under normal use then unlikely the bolt is seized and likely broke from over torquing, extractor would likely work.
If it broke while trying to remove it then it is likely seized and a small bolt like that into aluminum is going to be difficult to drill out or extract safely. You may not be able to get away with safely fitting a new bolt if you needed to oversize it and retap it since the walls would be getting thin. Replacing it is probably cheaper than buying anything to remove it.