Plz try at local electrical shops as the switch is below link easily available in just 50rs
Shomy Ceiling Fan Wall light Bedside Lamp Replacement Pull Cord Chain Switch 3A/250V 6A/125V S08 Drop ship https://www.amazon.in/dp/B07FSH48KY/ref=cm_sw_r_cp_apa_i_ohMQBbMP71Z2V