I have beatmaps that in the future I want them to be ranked but in every map that I ever make, it never reached the 5 hypes, so can I rank a map that don't have at least 5 hypes?
It is definitely a must. A beatmap need at least 5 hype so BN can nominate your beatmap. You can ask your close friend to hype your beatmap. It isn't as hard as you might think