求教I don’t really need it与I don't really want it区别~

问题描述:

求教I don’t really need it与I don't really want it区别~
在中文世界相当于怎样的语气,语境

第一:我真不需要它.
need是必须,需要,可以理it是必要条件,必须有或不必要.
第二:我真不想要它.
want想要,想有,可以理it是非必要条件,可有可无,主观上需要,客观上并不是必须的.求教,在这个句子用哪句好,谢谢:Excuse me,I think I won’t reserve the breakfast.but why it appeared on the confirmation?I want to make sure that I can cancel the “breakfast”.____________.