Thanks to these Navagraha doshas, folks experience different hurdles & hindrances of their existence. As a way to lessen and negate the malefic doshas or malefic influence of such planets, we execute several Pujas & Yagnas. Another etymology indicates that valga suggests "to paralyze" and symbolizes the strength of stambhana, https://www.youtube.com/shorts/5VeSyP9JRw0