Gotta keep trying it may have been the eggs,handling,turning.temp or humidity. Just try again and take notes they may help. everyone gets a bad batch sometimes.
Of course you should try again! And again.... and again.... and again..... It's very rare to get a 100% hatch.
Chickens off and on for 25+ years and still learning.
Yes, you should try again. You have already learned the hardest lesson that sometimes things don't work out like we hope with chickens.
These aren't your Grandfather's chickens.
I think the season's just getting started. My local farm supply store hasn't even started selling chicks yet.
As bad and frustrating as it can be, never ever give up.
Check your bator, go over in your mind what could of happened, be thankful for the two you got and try try again