The bit that caught my eye was OAT -10. So it's quite cold outside.
If you have a heated hangar, put it inside for a while to warm up (or a petrol driven air heater you can point into the engine compartment for a while).
I did this is the cold of a Maryland winter once and it worked provided you also inject the fuel into the inlet manifold (as noted above) and be ready to catch the engine when it fires.
You can pump the throttle a bit during the start cycle if not catching from the initial prime but be careful.
If you have been going at it for a while you may need to put a new battery on or do a jump (only done this once..)
Finally, there has been a bad batch of batteries on the R44 fleet recently. It is a known problem and comes from manufacturer. They were truely sh 1 t batteries and lasted about 2 months from new before dying. This may be part of the cause? But the cold will be helping!
Gud tur!
h-r