Hello @ashlea,
I’m just going to second what others have kindly already offered - yes! You can absolutely still cast spells without all of the listed ingredients 
If you have some ingredients, you could use substitutions. This is the act of switching out a missing spell ingredient for a corresponding ingredient that you have. There was a previous challenge about substitutions - I recommend reading the entries by the coven to see how they exchange ingredients.
If you don’t have any ingredients, no worries! You could cast a spell in the virtual altar. Here is a link:
It is even possible to do spells with no physical presence at all - not material nor virtual. This is done by making your Inner Temple. Here is how to make and use your Inner Temple:
Whatever you choose to do, I wish you all the best with casting your spell! Blessed be, Ashlea 