The gifts of divers kinds of tongues is speak out a message to the congregation in a language unknown to the speaker. Everyone does not operate in that gifts.
But that is not the same as praying to God in a heavenly or unknown language which is recieved when a person receives the baptism of the Holy Spirit. This promise is given for anyone who wants to recieve and if a great help in our prayer life.
Acts 2:38
Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost 39For the promise is unto you, and to your children, and to all that are afar off, even as many as the LORD our God shall call.
God knows everything you are about to ask, even before you pray, so speaking in a tongue that you or anyone else cannot understand is unnecessary and not a single occurrence of a Christian praying to God in an unknown tongue is found in entire Bible.
On certain occasions it was needed in order to overcome the language barrier, and every single occurrence of tongues in Scripture was in known languages that others could understand. For example, Acts 2:9-11 records sixteen different language groups who were present as the Spirit-filled disciples stepped outside the house to start witnessing.
Let us take a close look at 1 Corinthians 14, in which the tongues problem is brought into focus. Over half of the verses in this chapter mention the words edify, understanding, learning, or teach. It is obvious that the Corinthian church was not using the gift as it was supposed to be used. Over and over Paul urged that tongues be used only to teach the barbarian, unbeliever, or unlearned. Apparently some were creating great confusion by speaking any foreign language they knew, even while others were talking, and also when no one present could understand the language they spoke.
The burden of the entire chapter is that no one use the gift of tongues except to edify someone who could not be reached otherwise. Interpreting of tongues was also to be utilized only for instructing those who could not understand without a translation.
1Cor 14:
Verse 4, "edifieth the church."
Verse 5, "except he interpret, that the church may receive edifying."
Verse 6, "except I shall speak to you ... by knowledge."
Verse 7, "except they give a dis-tinction in the sounds ..."
Verse 8, "if the trumpet give an uncertain sound ..."
Verse 9, "except ye utter ... words easy to be understood."
Verse 11, "if I know not the meaning of the voice ..."
Verse 12, "seek that ye may excel to the edifying of the church."
Verse 13, "pray that he may interpret."
Verse 14, "my understanding is unfruitful."
Verse 15, "Pray with the under- standing ..."
Verse 16, "seeing he understandeth not what thou sayest."
Verse 17, "the other is not edified."
Verse 19, "that I might teach others."
Verse 20, "be not children in understanding."
Verse 22, "tongues are for a sign ... to them that believe not."
Verse 23, "unbelievers, will they not say that ye are mad?"
Verse 26, "Let all things be done unto edifying."
Verse 27, "And let one interpret."
Verse 28, "If there be no interpreter, let him keep silence."
Verse 30, "Let the first hold his peace."
Verse 31, "that all may learn ..."
Verse 33, "For God is not the author of confusion."
Verse 34, "Let your women keep silence."
Verse 35, "if they will learn anything ..."
Verse 40, "Let all things be done decently and in order."
Those who read this chapter of 1cor 14 for the purpose of finding ecstatic utterance can locate a couple of verses which seem to gave them support. But when those verses are studied in the context of all the rest of the chapter, and with an actual foreign known language in mind, they all can be seen to harmonize. Paul's discourse here is built around his contention that "tongues are a sign ... to them that believe NOT." Verse 22. So the true gift of tongues is given to reach the lost in their own known language.
Imagine how beautiful it would be if you and I went to a foreign country and went deep into the forest and we found a community of people living there, and they spoke a language we did not understand, but then miraculously you began talking about Jesus to them in tongues and they understood everything you said, and as a result, they accepted the good news about Jesus. Wow, that would be so amazing