fromPointXY creates a new geometry from a QgsPointXY object which is a tuple with two float coordinates, i.e. "X" and "Y".

So, try the following expression

feat.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(coords[0], coords[1])))

fromPointXY creates a new geometry from a QgsPointXY object which is created by providing two coordinates:

feat.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(coords[0], coords[1])))

fromPointXY wants a QgsPointXY, try:

feat.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(coords[0], coords[1])))

fromPointXY creates a new geometry from a QgsPointXY object which is a tuple with two float coordinates, i.e. "X" and "Y".

So, try the following expression

feat.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(coords[0], coords[1])))