How to create macOS app bundle correctly?

Question

I tried to create an .app bundle but I do something wrong and it doesn't start. So I have folder structure

MayApp.app
  - Contents
      - MacOS
          - Useless_Auto_Clicker_0.6.0 (exec file)
      - Resources
          - rt (some resource folder for the app)
          - AppIcon.icns
      - Info.plist

Info.plist content

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>CFBundleGetInfoString</key>
  <string>Foo</string>
  <key>CFBundleExecutable</key>
  <string>Useless_Auto_Clicker_0.6.0</string>
  <key>CFBundleIdentifier</key>
  <string>com.your-company-name.www</string>
  <key>CFBundleName</key>
  <string>foo</string>
  <key>CFBundleIconFile</key>
  <string>AppIcon.icns</string>
  <key>CFBundleShortVersionString</key>
  <string>0.01</string>
  <key>CFBundleInfoDictionaryVersion</key>
  <string>6.0</string>
  <key>CFBundlePackageType</key>
  <string>APPL</string>
  <key>IFMajorVersion</key>
  <integer>0</integer>
  <key>IFMinorVersion</key>
  <integer>1</integer>
</dict>
</plist>

App name is recognized, icon is loaded but I can't launch the application. Or nothing happens, or some uniformative error is thrown.

I think it's something wrong with the executable file. Even if it has all permissions (after chmod +x) it still isn't recognized as an executable. But if you run it from terminal it starts well

I stuck here and don't know where to search the solution

Here the link to download the app folder, if you want to try it yourself DropBox link