There are different purposes for speaking in tongues and the purposes also show that they can be for every believer. I Cor. 12:28 states “And God hath set some in the church, first apostles, secondarily prophets, thirdly teachers, after that miracles, then gifts of healings, helps, governments, diversities of tongues,”
(1) one purpose of speaking in tongues is for church edification such as I Cor 12:10 "To another the working of miracles; to another prophecy; to another discerning of spirits; to another divers kinds of tongues; to another the interpretation of tongues." I Cor 12:30 "Have all the gifts of healing? do all speak with tongues? do all interpret? Note that the beginning of this verse is about healing and the end is about interpretation and in the middle you have tongues. These verses are about the gifts to the church including of speaking in tongues with interpretation which every believer isn't going to be given that kind of tongue; however,
(2) this is the type of tongues any believer can have because the purposes are for a personal language between you and our Heavenly Father as shown in such Scriptures as Jude 1:20 "But ye, beloved, building up yourselves on your most holy faith, praying in the Holy Ghost, 21 Keep yourselves in the love of God, looking for the mercy of our Lord Jesus Christ unto eternal life.” Acts 10:46 "For they heard them speak with tongues, and magnify God. …” Ephesians 6:18 "And pray in the Spirit on all occasions with all kinds of prayers and requests." There's also singing in the Spirit Eph 5:19 "Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord;” .” I Cor 14: 15 “What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also.”
All tongues can be interpreted. I Cor 14:13 “Wherefore let him that speaketh in an unknown tongue pray that he may interpret.” This also means you may not receive the interpretation.
newchristian1694, also welcome to the forums.