Can I cook in a vegetarian restaurant or work as a waiter in a vegetarian restaurant with a junior high school education?

If there are no special regulations, you can go to the restaurant. If there are academic qualifications when recruiting, you can't. If you can go, it doesn't matter what you do. What matters is learning relevant knowledge and skills. The simplest serving is also a skill. Some people can serve six dishes on one tray, while others are still wobbly. Learning vegetarian knowledge and health-related benefits will help you recommend dishes to customers. Different vegetables have different nutrition. Introduce dishes to customers from the perspective of health care.