Hey - slight tangent, but if isolating vocals is the aim, there are some clever AI tools that can do this really well.
Depending on your technical expertise, the open-source Spleeter tool can work wonders
https://github.com/deezer/spleeter
(Windows GUI tool is here, but haven't tried it myself -
https://github.com/boy1dr/SpleeterGui )
Attached are are few seconds running on the same track as above.