I might pray a prayer I might tailor to the specific needs of the person that requested I pray about. Sometimes, depending on the situation, I will pray the “standard” Catholics prayers, Our Father, Hail Mary, Glory be., etc.
I learned those prayers in Church as a child by hearing them often at the Mass. The Our Father is said most every Mass and the rosary because of religious education classes attended.
The beauty in my heart about being Catholic is we can pray personally our own prayers or if words escape us due to whatever reason we have standard prayers we can fall back on that are comforting for they are so much a part of the Church. I
We read the NIV verse in 1 Thessalonians 5:16-24 New International Version (NIV)
16 Rejoice always, **
*** 17 pray continually**
**, 18 give thanks in all circumstances; for this is God’s will for you in Christ Jesus.
I think God is happy with any prayer that is offered with the sincerity of the heart.
God Bless.