Due To those Navagraha doshas, individuals confront various hurdles & hindrances inside their existence. In order to decrease and negate the malefic doshas or malefic affect of such planets, we execute many Pujas & Yagnas. One more etymology suggests that valga suggests "to paralyze" and symbolizes the power of stambhana, https://www.youtube.com/shorts/5VeSyP9JRw0