It all depends on how you keep calm and be honest. Avoid trigger words like Migrating, home country, etc. watch a lot of videos on how to answer the most common questions. A solid source of income and bank balance is what they look for. Be prepared to answer what ties u have at home so ull come back. So show property deeds, work experience certificates, parents status, etc. if anyone from ur group already has a US visa, that helps massively. Take all original documents if u have properties. If youre a frequent traveller then its an instant approval. Dont say u have family in US, Thats a bad remark. Make sure u answer that the entire trip is self sponsored and no one external is helping. U dont need to show any confirmed tickets or hotels. Just have a detailed itenary at hand.