tried silencing vocals no use

I tried everything to silence the vocals as suggested online and I even did the trick thats on there and it made the song sound funny. Does anyone recommend something else? I attached my song in case anyone is willing to lend a hand.

here’s the song

See here:
and here:

It’s in mono. It may have two sound tracks, but they’re the same. You need a stereo show and a very good stereo show to do vocal suppression. Koz

still no use I still hear the vocals after doing all steps as I did before

Did you read these?