Read Acts 2 carefully in light of I Cor. 12-14.
Acts 2 was not preaching in tongues (Peter did that in his learned language later). It was praise and prayer to God. The ones who spoke received it supernaturally, but they were understood by those in the audience naturally (was not the gift of interpretation). This passage is historical narrative tied into the Christian Pentecost (Acts 1:8; 2:4).
Paul's teaching in/for the church in I Cor. 12-14 is also true tongues with fuller insight. There is a private, personal use for self-edification that is speaking to God with the mind being unfruitful. Some languages sound like clicks and clucks. The hearers thought they were babbling and drunk (in addition to some understanding if they knew the language), but God understands. The other use is the corporate, public use that must be interpreted for group edification. The tongues may sound like babbling, but the interpretation will not if one understands the language (a Chinese person may not understand Punjabi, etc.).
There are counterfeits, fleshly excess, etc. just like in Paul's day. This is not an argument against the dynamic Pentecostal movement of this century that leads to evangelism, holiness, Word centered living, etc.
Cessationism is a lie of the enemy to neuter the church.