The IRS has no idea what deductions and credits are applicable to you and has no way of finding out. They could maybe prefill your reported gross income but then they’re at a loss.
In other countries there are such things as national citizen registries with domicile and familial information, this doesn’t exist in the US. If it did you could use that information to get much more of a start.
In other countries there are such things as national citizen registries with domicile and familial information, this doesn’t exist in the US. If it did you could use that information to get much more of a start.