2005 Citroen C3 had a new battery put my key in ignitions all light on then cut off car won't start at all .my key fob is damaged could this be a reason to why the car won't start if it not recognisein my key as the board on fob it not covered

Car just cut out when driving had a new battery fitted it semi automatic .put key in all light are Cummings up cause car won't start light go off .my key fob is damaged I can press button to lock it but have to use key to unlock car all the m emery board it showing on my key fob do you think it could be the key not registerin with car that why it not starting