basement floods every time it rains

https://page-wiki.win/index.php/Why_Basement_Flooding_St._Louis_Homeowners_Face_Every_Heavy_Rain

Every time it rains, I brace myself for that telltale gurgling sound from the sump pump in the basement. It's like clockwork: a heavy downpour, and within an hour there's a sheen of water creeping across the old concrete floor. We've tried extending the downspouts, checking the grading, even a dehumidifier, but nothing stops that damp, musty smell from returning. It's a constant worry, and we know any big storm could turn that trickle into a proper flood.