The instruction for interpretation of tongues only applies to #3 below.
Five Different Kinds of Tongues
1) Personal prayer language - Speaking to/with God
2) Intercessory prayer language - Praying for others in the Spirit
3) Prophetic prayer language - Addressing the whole church/preferably with interpretation
4) Singing in the Spirit - Singing in tongues/worship activity
5) Evangelistic language - Speaking the message of God to a people in their own language (not yours)
The above has always been my experience since the 70s.
I would add the following if that's ok with you.
6) Spiritual warfare, -addressing the powers of darkness.
The following is a description of what happened on one occasion. It is not meant to be prescriptive. In all such situations we need to be led by the Holy Spirit not an instruction book.
Many years ago my wife and I were asked to urgently pray for someone we didn't know who was in crisis. He was in a distant town, so this was long distant warfare.
As we started to pray, I discerned a demonic stronghold of death over the situation. I started in English to rebuke the demon, and then at some stage reverting to tongues. My wife likewise.
I was standing in the middle of our living room, facing out of the window with my eyes closed, my wife was on the sofa across the room also praying. I was aggressively addressing the spirit of death in tongues. And as I did so, the power of the Holy Spirit came on me, and I was transported in the Spirit to a completely different place.
I found myself in an incredibly arid environment. It reminded me of a dusty Mexican village with flat roofed hovels either side of a dusty street. The sun and sky were burning red.
It was a bit like a gun fight scenario because at the other end of the street was this evil black amorphous figure facing me. I was advancing up the street towards him and with each sentence in tongues I was picking a rock up off the street (bending down to pick them from the living room floor) and hurling it at the figure.
He in turn was retreating away in fear, ducking and diving as he was struck by these rocks.
Suddenly I heard my wife's voice, intruding through my natural ears,
"We stone you out of the town....!"
Jolted out of the vision, I asked her why she said that. It turned out that, although she had no idea what was going on with me, while speaking in tongues she had also found herself transported into the same vision, stoning the demon with her words!