We should not blame Jinn when we lose or misplace our items. Jinns have their own world which is different from ours and we are been taught to recite Quranic verses to avoid any harm from bad Jinns and bad people i.e. Sura Al Falaq and Sura An Naas and Ayatul Kursi.
You should search properly for the lost items and pray to Allah (SWT) to guide you to find what you have lost or misplaced.
Reciting Sura Al-Fatiha and gifting the reward to the mother of Imam Al-Ridha (AS) is useful to find lost or misplaced items.