If the marriage is genuine, you may be eligible to file for Adjustment of Status (Form I-485) from inside the U.S.

If marriage was planned before entering on a tourist or student visa, it may raise concerns about misrepresentation.

Overstaying a visa is often forgiven when applying for a green card as the immediate relative of a U.S. citizen.

You must provide strong documentation proving the marriage is real, such as joint finances, photos, and correspondence.