Looks and engine figures can draw a new rider towards a motorcycle, but fit is best judged by sitting on it. Your feet should reach the ground while seated, and the handlebars and controls should be easy to operate. Those checks reveal more than a seat-height figure alone.
Put both hands on the bars and see whether you can reach the clutch and brake levers without strain. Steadying and moving the stationary bike helps show how it may feel during everyday manoeuvres. Smaller motorcycles are usually easier for beginners to handle, though the fit of a particular model still depends on the rider.
Before the first ride, learn the controls and read the owner’s manual. An unfamiliar motorcycle is best explored away from traffic before joining busy roads. A bike that lets you reach the ground and operate its controls confidently gives you a sound starting point for building riding skills.