Relocating to the USA without a job can be challenging, but there are options available depending on the visas you are eligible for. For example, a limited stay and no work authorisation and student visas may offer opportunities for limited on-campus employment and Optional Practical Training in the US post-graduation.
There are other pathways that do not hinge on a permanent job offer, so we recommend thoroughly investigating US visa options to determine the most suitable visa based on your individual circumstances.