If you have passed the intermediate chef certificate and have relevant work experience, you can apply for the EB3 category of labor migration. You said you didn't have the relevant skills, and these can be learned. You must have this skill first, and then ask your relatives to help you apply for labor papers in the Ministry of Labor. After you have the labor paper, your relatives can apply for labor immigration for you at the US Immigration Service, and you need to wait for the schedule (currently more than 6 years). This route takes a long time, but it is more practical than a work visa. Work visas are non-immigrant visas, which are generally aimed at international students who have graduated from American universities or above, and it is difficult for ordinary people to apply.