spark plugs look fine
theres enough fuel.
could it be the alternator by any chance?
They may look fine and there might be enough fuel but that's not what retiredat44 means.
Hold each spark plug wire near (within 1/4") the valve cover and crank the engine over. Make sure there is a spark that jumps from the wire to the valve cover. That will make sure you are getting spark.
For fuel, you can just undo a fuel line and crank the engine and make sure gas come out.
If it's cranking over strongly, it's not the alternator. You can make sure of this by trying to jumpstart the car.
Besides a broken timing belt, it could also be a problem with the distributor.