Since other sports can persist, spinning is certainly no problem. Give yourself confidence first.
You said you couldn't keep up with your bike for an hour, and your muscles ached.
It means you exercise too much. Often this situation is that you don't exercise for a long time and suddenly increase the amount of exercise, and your muscles are torn too much. As long as there is no strain, this is a good thing, indicating that the muscles are growing.
Stop training immediately if you don't touch it, reduce the weight of the bike, find the feeling step by step slowly, and take turns learning from the coach, so don't rush for success. When you are tired, you can sit and get used to it for a week or so, and you can also add the weight of the action.
What I pursue is the highest basal metabolic rate. I will do three days of anaerobic training and add about half an hour of riding every day during the fat reduction period.
Don't ride standing at first, even if everyone around you is riding with their heads shaking, don't be infected by this atmosphere, just sit and ride honestly. In this way, the pressure of sitting on the leg is relatively small, and only the resistance of the ankle is felt. Resistance is based on your own feelings, not as much as the coach said, so don't be so real.
Be careful when riding from sitting to standing. Make sure your ankles, knees, calves, thighs, waist and even biceps are strong. If you are not strong enough, please practice your strength first. Don't mess with your body. It's cruel to get up and ride standing. Also, please be sure to find a patient and responsible coach who can help you see your posture, whether your thighs are buckled, whether your knees are everted, whether you are swaying from side to side when riding, and so on. Correct posture is the basis to ensure that you can ride safely and comfortably.