@Meanlucario
That’s been retconned over and over right up until the end of original IDE universe that femmes were natural to Cybertron but at some point became dazed out and even then there were some that preferred to be a “she”.
As for sexual reproduction that’s not really been something that’s been dived into probably because Hasbro doesn’t want to bring up sex in their franchise even if it is one that isn’t totally kid centric.
But there is a precedent for human Transformers cross breeding so that they might be able to do it themselves but that would be something more likely to be fanon than canon.
Although back in the old IDW universe Scorponok did try to find a way.