I have used sanitizer and dettol in my vagina everyday for 1 year will it cause any cervial cancer,vagina cancer or any serious issue?

Both are potentially seriously harmful. They risk killing the healthy, normal bacteria your vagina needs and making you more susceptible to the wrong bacteria, including the condition called bacterial vaginosis. It also could increase your risk of STDs if and when you are sexually active. You also should not douche, which causes similar problems. The vagina needs no help to remain healthy.