Bonding can go quickly and easily or it can be difficult and take weeks or months. I know of one person who was never able to bond her two rabbits, even after months, and she finally gave up and keeps them separated. It sounds like you might not have the time right now to devote to this.
If you do decide to get another rabbit, from my personal experience and from my many years volunteering at a rabbit sanctuary, the best pairing is a neutered male and a spayed female. The House Rabbit Society also states that a male-female pairing (spayed and neutered of course) has the best chance of success. That is not to say that same sex pairings won’t work, but you will probably have better luck with a male and female. My friend who could never bond her rabbits had two females.
Are there rabbit rescue groups near you? Many of them encourage people to bring their rabbit if they are planning to get a companion for them, so that they can see which rabbit might make the best match.