The IRS has comprehensive rules that help you determine if you are an employee or independent contractor. It doesn't matter what your contract says.
https://www.irs.gov/businesses/small...ractor-defined
https://www.irs.gov/businesses/small...ed-or-employee
If you are still not sure after reading those pages you can file Form SS-8 with the IRS and the IRS will determine if you are an employee or independent contractor.
https://www.irs.gov/pub/irs-pdf/fss8.pdf

