How does the birth control would help me to be more fertil? and which one would be the best birth control option to be more fertile and help me consiv

It doesn't help: Birth control pills are designed to help prevent ovulation (egg release) or implantation of an embryo for women who are trying to prevent pregnancy. They can be used as part of fertility treatment, such as to prevent ovarian cysts and synchronize follicle development before an ivf treatment, but on their own they don't help you to conceive. See a fertility specialist (rei) if you need help.