I used the "Vocal Remover" effect but the vocal still remain the same :((((

I see people using Audacity to remove lyrics, and I tried the same but it doesn"t work

Vocal Remover has some restrictions. Your song has to be in stereo, two different blue waves, and not two-track mono (same thing on both left and right). The song can’t be in actual mono. One blue wave.

The song has to have the singer in the middle and not panned left or right.

The singer has to not have stereo effects added such as echo or reverb. I have a sample song where the lead singer vanished, but his effects and echo stayed. It sounded like he was singing in the next room.

If it does work, it’s not unusual for centered instruments such as drums and bass to vanish along with the voice.

A lot of songs fail vocal removal.