Are my chances of getting pregnant higher of full ejaculation inside or precum?

Here are some ... Inseminating "high" and closer to cervix makes the sperms easier to swim into/through cervix, uterus, into Fallopian tubes to fulfill their destined duty of fertilization. So, if getting pregnant is your priority, ejaculate at high location of vagina and have partner lie flat with buttocks elevated for 2-4 hours; that may help. If doubt, see gyn-doc timely.
If trying to. get pregnant having a full ejaculation inside the vagina every other day around ovulation gives you the best chance to get pregnant.