If you are using Audacity 3.2 or later, you may see an option for or similar plugins. If the standard "Vocal Reduction" tool leaves too much background noise or makes the vocals sound "swirly," you should look into AI-based stem separation tools (like LALAL.ai or Moises.ai) which use machine learning to "recognize" a voice, rather than just guessing it's in the center.
And it was getting louder.
Set this around 8000Hz to remove sharp cymbal crashes. vocal reduction and isolation audacity