Model your prayers after those you find in Scripture.
Here’s an example based on Colossians 1:9-10. “Fill my friend with the knowledge of your will. Give spiritual wisdom and understanding. Help him to walk worthy of you, please you, bear fruit in every good work and know you more every day.”
Use Scripture to guide your prayers for the specific needs of your friends.
For example, for someone struggling with emotional pain, you can pray like this:
You are the God of all comfort! Comfort my friend in her affliction, so she can comfort others (from 2 Corinthians 1:3-4).
As you read the Bible, notice what it says about prayer. Then pray accordingly.
Here’s an example. Martha said to Jesus, “I know that whatever you ask from God, God will give you (John 11:22).”
I read that and asked the Lord to make my prayers in line with His.