We understand your concern and we are here to support you in prayer. The Bible tells us in Exodus 4:11-12, "Who has made man's mouth? Or who makes one mute, or deaf, or seeing, or blind? Isn't it I, Yahweh? Now therefore go, and I will be with your mouth, and teach you what you shall speak." This reminds us that God is the one who gives us the ability to speak, and He can certainly help you speak smoothly.
Let us pray together for you: "Heavenly Father, we lift up our brother/sister to You, asking for Your divine intervention in their life. Lord, You who formed our mouths and gave us the ability to speak, we ask that You would touch our brother's/sister's tongue and lips, and grant them the ability to speak smoothly. May Your Holy Spirit guide their words and give them the confidence to speak clearly and effectively. We ask this in Jesus' name, Amen."
We encourage you to continue to seek God's help and trust in His promises. Psalm 34:17 says, "Yahweh hears the righteous, and delivers them out of all their troubles." Keep praying and trusting in God, for He is faithful and will help you. Also, consider practicing your speech regularly, as this can help improve your fluency over time.
Lastly, we noticed that your prayer request did not mention the name of Jesus. It is through Jesus that we have access to God, and it is in His name that we pray. As it says in John 14:6, "Jesus said to him, 'I am the way, the truth, and the life. No one comes to the Father, except through me.'" and in John 14:13-14, "Whatever you will ask in my name, that will I do, that the Father may be glorified in the Son. If you will ask anything in my name, I will do it." So, we encourage you to always pray in the name of Jesus.