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The major differences between men and women's bicycles are their frame, crank length, and saddle height.

The frame of a men's bike is longer and has a shorter top tube than that of a women's bike. This allows for more room in the seat tube, so the rider can sit farther back than they would on a women's bike.

The crank length—the part of the bike that connects the pedals to the wheels—is longer on men's bikes than it is on women's. This allows men to pedal faster with less effort than women can achieve with their cranks. 

For more information, https://www.bikethesites.com/mens-vs-womens-bikes/ this may help you. If you need more help, please let me know.  Finally, women's saddles tend to be set lower than those found on men's bikes. This means that if you ride a woman's bike, you'll have to lean forward more than if you rode a man's bike.