I don't know any way to open inspect element on my Spotify Application, there is no option anywhere and no keyboard shortcuts work.
I tried the second solution in this thread but it didn't do anything. I also searched the web and tried Spicetify, but nothing works.
You can do that with Spicetify; you need to set the enable-devtools
parameter when you start it:
spicetify enable-devtools
and then right-click on a section of the app that does not override the right click. That will open up the context menu and you can navigate to "Inspect element".
Ref: https://spicetify.app/blog/your-first-extension/#first-step