Kindly refer to the following link(s):
Seeing a dream, having a bad feeling in the heart after praying Istikhara, is it a sign from
The correct procedure to pray Istekhara
When reciting dua Istekhara do I mention the matter loud in English/Arabic/not mention
Can we do Faal or Istekhara from the Quran to make a decision?
Can we pray Istekhara on behalf of others? Professional Aalims praying Istikhara
Can I do Istekhara for my Daughter's marriage? Marrying out of your community
Can we do Istikhara without praying the 2 rakahs? What if a Woman is in her menses?